precipitation 相关例句
名词
1. There will be precipitation on northern hills tonight.
今夜北面山上有降雨。
precipitation 网络解释
1. 沉淀：凝集(coagulation)和沉淀(precipitation):原水也含悬浮物质(如油),必须将之去除(至1ppm以下)以防止起泡及锅炉沉积. 极小的颗粒不会沉降下来,且会穿透过滤器. 要除去这些微细颗粒(通常为胶体(colloidal)物质)须用凝集剂.
2. 沉淀反应：沉淀反应 (precipitation)一种血清学反应. 可溶性抗原与相应抗体结合,在有适量电介质存在下,经过一定时间,形成肉眼可见的沉淀物. 沉淀反应的抗原可以是多糖、蛋白质、类脂等. 同相应抗体比较,抗原的分子小,单位体积内含有的抗原量多,
precipitation 双语例句
1. The results showed that water consumption law of spring maize was consistent in different precipitation years for normal or drought, the joint stage to tasselling stage was the peak of water consumption.
结果表明，无论是正常降水年型，还是干旱年型，春玉米在不同的生育时期耗水规律基本是一致的，即拔节至抽雄期是玉米的耗水高峰期。
2. In solvent and under the action of certain catalyst, anilino methyl siloxane is reacted to obtain solid cage anilino methyl sesquisiloxane octamer acid salt; and through filtering, washing, precipitation and reaction with amine desalting agent, cage anilino methyl sesquisiloxane octamer is finally prepared.
本专利提供了一种笼型八聚苯胺甲基倍半硅氧烷的制备方法，苯胺甲基硅氧烷在一定溶剂和催化剂作用下反应，过滤得到笼型八聚苯胺甲基倍半硅氧烷酸式盐固体，经过洗涤、沉淀，再与胺类脱盐剂作用，最终制得笼型八聚苯胺甲基倍半硅氧烷。
3. First, cationics are easy to have electrical neutralization function with negative charged reservoirs and HPAM and other polymers, which will result in adsorption loss and precipitation loss, so the selection and use of the cationics should be careful. Second, chromatographic fractionation should be avoided in the application of various surfactants in the combination system. Third, the same type of surfactants makes little combination synergistic action, but it can remedy a defect of single surfactant.
表面活性剂复配时应注意：①阳离子表面活性剂易与带负电的油层和聚丙烯酰胺等聚合物发生电中和作用，而造成吸附损失和沉淀损失，因此阳离子表面活性剂的选择和使用应慎重；②避免复配体系中各表面活性剂在应用中出现色谱分离；③同类表面活性剂复配协同效应小，但可弥补单一表面活性剂性能的不足。
4. This paper dicusses various reaction conditions based on generating the precipitation BaSO~(2-)_4 by means of reacting SO~(2-)_4 with the precipitator Ba~(2+) and determines exactitude of determination methods.
1前言在环境分析化学工作中，用间接法测定自然界中非金属和阴离子是学科发展的重要内容[1]。利用铬酸钡悬浮液与SO2-4的反应，使其由BaCrO4转化为溶解度更小的BaSO4，用AAS测定CrO2-4，以间接确定SO2-4含量的研究[2]。
5. Haoxianghaoxiang all of a sudden stop and rest, Zhao Yichu local precipitation thoughts.
突然好想好想停下來休息一下，找一處地方沉澱思緒。
6. danci.911cha.com
6. As the result of Nb precipitation, the hot ductility of the steel was significantly reduced in the lower temperature region of γ single phase.
由于含Nb钢试样共折转变的推迟，与不含Nb钢相比，其第Ⅲ脆性温度域向低温延伸。
7. When the temperature was lowered to 900℃, the precipitation content of Nb reached maximum and fine Nb precipitates were found both along γ grain boundaries and inside the grains with mean particle size of 5-8 nm and interparticle spacing of about 30 nm.
在温度降至1100℃以下的变形试样中Nb开始由γ晶中析出，1000-950℃之间析出的Nb较粗大并在钢中零散分布；温度降至900℃左右时，大量微细的Nb在γ晶界和晶粒内析出，尺寸平均为5-8nm，间距在30nm左右，造成了γ相区低温域合Nb钢延塑性的急剧减少；温度降至800℃时，先共折铁素体开始在γ晶界析出，钢的延塑性继续降低。
8. It shows that runoff is closely correlated with the features of individual precipitation, and it is also affected by vegetation within a short period of time. Raindrop erosion, sheet flow erosion and rill erosion on the slope are the main soil erosion patterns; sediment yield occurs mainly in flood season. Human activity and individual precipitation are two important factors that control the soil erosion at a small watershed. Comprehensive management on the slope in a small watershed is an efficient measure of water and soil conservation.
分析表明，小流域的产流方式容易随次降雨条件的变化而变化，植被因素在较小时间尺度内就会影响产流；产沙主要来源于坡面上的溅蚀、片蚀和细沟侵蚀，时间主要集中在汛期；人类活动以及次降雨条件是控制小流域侵蚀产沙的重要因素；在小流域内进行坡面的综合治理是水土保持的有效措施。
9. precipitation的解释
9. Methods: from prepation of crude drug as start, study the technology of extract and defat with L9 (3~4) orthogonal test. With EtOH extraction and water sed, alkali washing, EtOAC extraction as main methods of eliminate dopant. Finally with alky AlzO3 chromatographic column, rich and gain anticancer active site. The maximum response was achieved at a 40 min extracting time with 10 times volume 90% EtOH added to the sample for the first time and 30 min for the second time. Adding 10 times water will produce precipitation; Place the precipitation into 6 times petroleum benzin to de-fat at 60℃.
云南红豆杉中抗癌活性物制备工艺研究方法：利用正交设计试验L9(3~4)确定原料药提取工艺为：10倍量90％乙醇提取两次，第一次40分钟，第二次30分钟；醇提液用10倍量水沉；沉淀加6倍量石油醚40℃脱脂；用1mol／L的NaOH溶液碱洗，除去酸性杂质；以碱性氧化铝柱，以环己烷／丙酮为洗脱溶剂，在环己烷-丙酮(6：4)段富集到所需活性部位，洗脱剂用量为3VB。
10. The mutual action of Precipitation and recrystallization and its effects on the microhardness of RS Cu-Cr-Zr-Mg alloy upon aging were investigated in this paper.
本文研究了快速凝固Cu—Cr—Zr一Mg合金在时效过程中，析出与再结晶的交互作用及其对显微硬度的影响。
11. Acid mine drainage; Ferrite; Calcium ion; Chemical precipitation
酸性矿山废水；铁氧体；钙离子；化学沉淀法
12. In cast iron adding a certain amount of ferrosilicon can used to prevent the formation of iron carbide and promote the precipitation of graphite. Therefore the production of ductile iron, ferrosilicon is an important Inoculant (to help precipitation of graphite) and Nodulizer.
在铸铁中加入一定量的硅铁能阻止铁中形成碳化物、促进石墨的析出和球化，因而在球墨铸铁生产中，硅铁是一种重要的孕育剂和球化剂。
13. precipitation的意思
13. In the first section, verified the water substance advection scheme CSLR, compared with the old scheme QMSL, can do a better job in high-order accuracy, conservation, and shape preserving; then added the CSLR scheme into GRAPES_meso and GRAPES_global, through practical forecast experiments show that, with CSLR scheme, the model can better simulate the water substance advection, improved the effect of precipitation prediction.
第一部分中，先通过理想试验，验证了CSLR水物质平流方案相对于模式中原有的QMSL方案，可以做到更好的高精度、守恒、保形；然后将CSLR方案接入GRAPES有限区域模式和全球模式，通过实际个例模拟，验证了CSLR平流方案可以更好的模拟水物质的平流过程，提高了模式对降水的预报效果。
14. In this thesis, the thermosensitive phase behaviors of temperature-sensitive nanogel dispersions have been investigated and the main contents and results are as follows:(1) Poly(N-isopropylacrylamide-co-acrylamide) poly(NIPAAm-co-AAm, named as PNIP/AAm nanogels were prepared by precipitation polymerization in the presence of various amount of crosslinker.
本文着重研究了温敏纳米凝胶分散体的温敏相行为，主要研究内容及结果如下：(1)用沉淀聚合法制备了一系列交联剂用量不同的聚(N-异丙基丙烯酰胺-co-丙烯酰胺)poly(NIPAAm-co-AAm，记为PNIP/AAm共聚纳米凝胶，动态光散射检测其粒径为200～300 nm，且粒径分布窄。
15. precipitation
15. It shows that the precipitation of interannual change trends to decrease with -22.6 ~-9.6 mm/10a, the precipitation reduction mainly happened in autumn and it`s sharp point was at 1980-1990. The short oscillation period of 6~7a and long oscillation period of 15a in precipitation had also been found.
分析表明：甘南高原黄河重要水源补给区大部分区域降水量年际变化呈下降趋势，降水量变化曲线线性拟合倾向率在-22.6～-9.6mm/10a之间，降水量递减以秋季降水量递减为主，降水量减少突变点在1980～1990年之间，年际变化主要存在6～7a短周期振荡，15a的长周期振荡特征。
16. The reconstructed allogeneic bone obscured via the method of biphasic precipitation shows better biocompatibility.
双相沉降法制备的重构同种异体骨（同种异体脱钙颗粒骨/I型胶原）具有良好的细胞相容性。
17. 1200 Mm annual precipitation, rain day for more than 180 days, relative humidity 80%.
年降水量110—1200毫米，雨日180天以上，相对湿度80％。
18. Average annual precipitation 1079.3 mm, the annual average of 126 rainy days.
年平 均降水量1079.3毫米，年平均雨日126天。
19. precipitation
19. The total accumulated temperature over 10°is 5216°with 1936 hours of sunshine, 1453mm of precipitation, 162 days of rain period and 254 days of frost-free period in a year.
稳定通过10°的持续时间239天，全年大于10°的总积温5216度，年日照时数1936小时，年降水量1453毫米，雨日162天，无霜期254天。
20. Tophaceous gout results from continued precipitation of sodium urate crystals during attacks of acute gout.
沙粒状痛风是由急性痛风发作期尿酸钠盐结晶继续析出引起。
precipitation 词典解释
1. 降水
Precipitation is rain, snow, or hail.
2. 沉淀；沉析
Precipitation is a process in a chemical reaction which causes solid particles to become separated from a liquid.
precipitation 单语例句
1. The weather forecast said Beijing will be clear from Friday afternoon and no precipitation is expected in the coming two days.
2. The precipitation caused a mud and rock slide that closed Highway 18, a major road in the area.
3. Several counties in the cities of Baise and Hezhou have received little precipitation recently, the Guangxi Flood Control and Drought Relief Command Center said.
4. He later used computer programs to convert each sound recording into a sound graph, then compared the patterns to a database of temperature and precipitation records.
5. Seventy percent of its annual precipitation occurs within crop growing seasons, in which the concurrence of rain and heat provides an excellent environment for grain production.
6. Local meteorologists said that in the county seat precipitation topped 68 mm, while other townships in Dianjiang recorded averaged rainfall of more than 30 mm.
7. Data from Beijing Meteorological Bureau show that urban areas in the municipality were inundated by 170 millimeters of precipitation during the deluge.
8. Its annual precipitation is less than 400 mm but the drip irrigation technique used in the greenhouses requires less water.
9. China's common catalysts used for cloud seeding in precipitation enhancement include silver iodide, dry ice and liquid nitrogen.
10. The precipitation helped ease the drought in some areas of north China, with more rainfall expected in the next two weeks.
precipitation 英英释义
noun
1. overly eager speed (and possible carelessness)
e.g. he soon regretted his haste
Synonym: haste hastiness hurry hurriedness
2. an unexpected acceleration or hastening
e.g. he is responsible for the precipitation of his own demise
3. the act of casting down or falling headlong from a height
4. the falling to earth of any form of water (rain or snow or hail or sleet or mist)
Synonym: downfall
5. the process of forming a chemical precipitate
6. the quantity of water falling to earth at a specific place within a specified period of time
e.g. the storm brought several inches of precipitation
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