1. That is actually a cavity in the earth.
    那其实是一个地下洞穴。

2. Cavities in teeth are caused by decay.
    牙齿的蛀洞是由蛀蚀造成的。

1. 空洞：6.空洞与空腔 空洞(cavity)为肺内病变组织发生坏死,坏死组织经引流支气管排出而形成. X线表现为大小与形状不同的透明区(图3-1-13). 见于肺结核的干酪样坏死病变、肺脓肿、肺癌及某些真菌病. 空洞壁可由坏死组织、肺脓肿、肺癌及某些真菌病.

1. Third, if you are a northerner, and perhaps did not really understand Fuzhou cavity.
    第三，如果你是北方人，也许听不太懂福州腔。

2. Materials and Methods MRI data of 8 cases with ossifying fibroma in nasal cavity and nasal sinuses confirmed pathologically were analyzed retrospectively.
    资料与方法回顾性分析经手术病理证实的8例鼻腔及鼻窦骨化性纤维瘤患者的MRI资料。

3. Acousto-optic Q switch is a technology of control the cavity loss through interaction of sound and light.
    声光Q 开关是利用声光相互作用以控制光腔损耗的Q 开关技术。

4. cavity

4. The innovations of the dissertation are given below: 1、Through many times simulation, we find that the suitable adjustment the dielectric rod radius between defect waveguide and resonant cavity can be greatly improved the efficiency of coupling.
    本论文的创新点主要包括以下三个方面：1、通过多次仿真，发现适当调整波导与缺陷谐振腔之间介质柱半径的大小能较大幅度的提高耦合效率。

5. Through the analysis, we also find that the change of defect waveguide edge dielectric rod radius and wave guide's width are advantageous for enhancing the coupling efficiency of waveguide with the resonant cavity.3. The coupling relation of between the resonant cavity and waveguide has been analyzed, and according to the coupled mode theory, transmission coefficient expression of every port has been derived.
    通过分析也发现适当改变缺陷波导边缘介质柱的半径、缺陷介质柱与波导间介质柱的半径及波导的宽度，都有利于提高波导与谐振腔之间的耦合效率。3、从理论上分析了谐振腔与波导间的耦合关系，根据耦合模理论导出了各端口传输系数的表达式。

6. Appling the method to multi-channel filter design, we find that the filter efficiency can improve about 50% when the dielectric rod radius is proportion with ransonant cavity dielectric rod radius.
    将其应用到多信道滤波器的设计中，发现当其半径与相应缺陷介质柱半径的大小成正比时，各信道的耦合效率均能提高50%左右。

7. 911查询·英语单词

7. Contrast and analysis of D-dimer and hemaleucin original value in blood were made before and after operation. Results:（1）There was substantive echo in greater saphenous vein soon after the treatment. The substantive echo became strong when reexamined. The bore size became smaller in some ways. And there was no sign of blood flow in the cavity.（2）Pathological mechanism showed that the bast in greater saphenous vein disappeared after being treated by holmium laser.
    结果：（1）治疗后大隐静脉腔内即见实性回声，随诊发现回声逐渐增强，大隐静脉内径均比术前有不同程度缩小，腔内无血流信号；（2）、病理显示，钬激光治疗后大隐静脉内皮消失，内、中、外膜均不同程度的变性、坏死；（3）血管内不同介质直接影响钬激光对血管壁的作用结果；（4）手术前、后血D-二聚体值比较差异有统计学意义（P﹤0.01），纤维蛋白原值比较差异有统计学意义（P﹤0.05）。

8. cavity

8. Optical properties and mode tuning of defect modes in one-dimensional photonic crystal micro-cavity containing dispersive medium.
    含色散介质的一维光子晶体微腔的光学特性和模式调节。

9. Optoelectronics; photonic crystal; finite-difference time-domain method; micro-cavity; mode tuning
    光电子学；光子晶体；时域有限差分法；微腔；模式调节

10. According to the life of laser crystal, dye piece, totally reflecting mirror, light focusing cavity and so on, laser life is predicted.
    根据激光晶体、染料片、全反射镜、聚光腔等元器件的寿命，对激光器寿命进行预计，并在实际使用中得到了验证。

11. Results: In these 38 cases, the incidence came with the order of hydrocephalus, serous cavity fluidify, anterior abdominal wall defect, fetal hydrops.
      在主要畸形存在的同时往往合并有其他畸形的存在，甚至是合并复杂的多系统畸形，而一些小的合并畸形较易漏诊。

12. Objective: To master the best methods for the cleaning of suction tubes for uterine cavity.
      目的：为了掌握使用后的子宫腔吸引管的最佳清洗方法。

13. cavity

13. Any abnormalities in the uterine cavity or fallopian tubes will be visible on a monitor.
      监视器能看到任何子宫腔和输卵管的异常。

14. cavity

14. Objective To explore the best methods for the cleaning of suction tubes for uterine cavity.
      目的探讨子宫腔吸引管的最佳清洗方法。方法将采用清水法(400件)与加酶法(400件)浸泡的子宫腔吸引管分别随机分为A、B、C、D4组，各100件。A组采用超声清洗机洗涤，B组采用高压喷枪冲洗，C组采用手工擦洗加超声清洗机洗涤，D组采用手工擦洗加高压喷枪冲洗。

15. cavity的解释

15. Negus(1929), Kelemen(1938 and 1948), DuBrul(1958), and many others have concluded from this that only man was capable of conducting the glottis-produced sounds through the oral cavity, whereas other primates had the sounds directed through their nasal cavity.
      Negus(1929)，Kelemen(1938 and 1948)，DuBrul(1958)，还有其他人，认为只有喉头盖发音是在口腔发音部位。其他的灵长类则是用鼻子发音。

16. The paper has made a complete and thorough discuss on the pertinence of Biqiu disease coming on with Zhongqi, emphasizing that Zhongqi plays an important role in maintaining the regular physiological function of nasal cavity, and the steering effect of Zhongqi theory to the prevention and cure of Biqiu.
      本文对宗气与鼻鼽发病的相关性进行了全面深入的探讨，强调宗气在维护鼻窍正常生理功能中所发挥的重要作用，以及宗气理论在鼻鼽防治中的指导作用。

17. The karst geomorphy - 20 thousand square meters side stone ponds scene, is considered to be the world-class solution cavity scene. The exterior view is so amazing and gorgeous that it is hard to appreciate all of theme once.
      被中科院地理研究所认定为世界级溶洞景观，洞内的喀斯特地貌——2万平方米的边石池景观，堪称为世界溶洞之奇观，洞内景观令人叹为观止，美不胜收。

18. When the breaker works, the electric motor revolves passes the blet pulley or the shaft coupling, the drive shaft and the cricular cone department in the heart set comples moves cricles one fixedly does turnd on lathe suspends the movement, thus enable the cricular cone the wall to approach from time to time Leavel the solid attire to put on in the adjustment rolls over the white wall surface, causes the ore to be under the impact unceasingly in the cavity, the extrusion sum the curving functing but realize ore.
      破碎机工作时，电动机的旋转通过皮带轮或联轴器、传动轴和圆锥部在偏心套的迫动下绕一固定作旋摆运动，从而使破碎圆锥的破碎壁时而靠近又时而离开固装在调整套上是轧白壁表面，使矿石在破碎腔内不断受到冲击，挤压和弯曲作用而实现矿石的破碎。

19. Methods Twenty adult male SpragueDawley rats were used for measuring central venous pressure via jugular vein approach and measuring portal venous pressure via main portal venous puncture. Rat model of intraabdominal hypertension was established by injection of gaseous nitrogen into the peritoneal cavity.
      将20只成年雄性SD大鼠分别通过颈静脉插管、穿刺门静脉主干法来测定中心静脉压和门静脉压，运用氮气气腹法制作大鼠腹内高压动物模型。

20. cavity的意思

20. Methods Twenty adult male Sprague? ?Dawley rats were used for measuring central venous pressure via jugular vein approach and measuring portal venous pressure via main portal venous puncture. Rat model of intra? ?abdominal hypertension was established by injection of gaseous nitrogen into the peritoneal cavity.
      将20只成年雄性SD大鼠分别通过颈静脉插管、穿刺门静脉主干法来测定中心静脉压和门静脉压，运用氮气气腹法制作大鼠腹内高压动物模型。

1. 洞;孔;腔
    A cavity is a space or hole in something such as a solid object or a person's body.

2. (牙科)龋洞，蛀牙洞
    In dentistry, a cavity is a hole in a tooth, caused by decay.

1. (anatomy) a natural hollow or sinus within the body

    Synonym: bodily cavity cavum

2. a sizeable hole (usually in the ground)

    e.g. they dug a pit to bury the body

    Synonym: pit

3. soft decayed area in a tooth
    progressive decay can lead to the death of a tooth

    Synonym: caries dental caries tooth decay

4. space that is surrounded by something

    Synonym: enclosed space