腔的

When the researchers compared the human ultraconserved element to all the DNA sequences in the public database GenBank, the closest match was to DNA from the coelacanth -- an ancient fish thought to have gone extinct millions of years ago until a live specimen was caught in 1938 off the east coast of South Africa.

该鱼类一度被认为已经绝种，直到1938年在南非的东海岸又重新被发现。腔棘鱼是一种3亿6千万年海洋生物向陆地脊椎动物进化过程中至关重要的鱼类的后裔。虽然人类和腔棘鱼的演化从那时就分道扬镳，然后经过百万年的演化人类和腔棘鱼仍然共享着类似的重要基因片断。

By analyzing the differences between the " surface " and the "antrum" and drawing an analogy between the architecture and a coelenterate,the building s biologic functions which bridge the human and the nature and the possibility of the expression are discussed.

该文分析了表皮与腔体建筑之间的概念差异，并运用仿生学的方法，通过将建筑与腔肠科动物进行类比，进一步揭示建筑在人与自然间所起到的作用，探讨了腔体建筑的内容特征以及形式表达的可能。

The principal of buffer is described as follows.At impulsing down,the piston moves down and vacates the annular space.The pressure in respiratory cavity decreases to a certain level and the traveling valve opens.At that time,the liquids enter into traveling valve and cavity and the plunger is impulsed upward to carry out the gentle transient at the sudden change.When the upward impulsing begins,the respiratory cavity is subjected to pressure and the traveling valve closes.During the gradual pressure rising,the liquids in respiratory cavity effuse from the upper ventage and the sudden change of force-summing direction of plunger is relieved relying on the resistance of ventage.

其原理大致是：下冲程时，活塞向下运动，让出环形空间的体积，呼吸腔内压力下降，下降到一定水平后，游动阀打开，此时，游动阀和小孔同时进液，使柱塞在从上死点处突然改变方向向上运动时得到缓冲，实现了柔和过渡；当上冲程开始时，呼吸腔受压，游动阀关闭，在压力逐渐上升的过程中，呼吸腔内的液体从上部的小孔流出，并依靠小孔的阻力使柱塞受力突然换向得到缓冲。

Holding the input energy and actuator volume fixedness, the active frequency has no effect on jet velocity. But the recovery stage time shorten with the increase of active frequency. So, the choice of active frequency is under consider of the temperature resistance for actuator.

在输入能量和腔体体积不变时，激发频率的提高对合成射流的最大速度没有明显的影响，但缩短了腔体内气体的冷却时间，实验时对激发频率的控制首要考虑腔体的耐温能力。

Some fossil bones have all the interstitial spaces filled with foreign minerals, including the marrow cavity, if there is one, while others have taken up but little from their surroundings.

一些石化的骨头的所有裂缝的空隙，包括骨髓空腔，都充满了外来的矿石，如果这儿还有有一个空腔当其他的空腔都已被占据，填充物很少是来源于他们的环境。

The model for calculating the stability of the resonator containing a laser rod with curvature ends was developed,which was based on the transfer matrix theory of Gauss beam. The results from the numerical simulations on some typical resonators indicate that the laser rod with curvature ends can expand the stable region of plano-plano,plano-concave and plano-convex cavity notability;despite the laser rod with curvature ends can improve the stability of above mentioned cavities,it costs the effective mode volume.

计算结果表明，对于几类典型的谐振腔如平平腔、平凹腔，球面端面激光棒可以显著的扩展强热聚焦作用下的稳定工作范围；球面端面激光棒在提高约束稳定性和热稳定性的同时，通常是以牺牲有效模式体积为代价的。

Result: In 489 rut CT natural cases discover lacuna-focus. In no-easy diagnostic shadiness lacuna-focus 502 cases, using HRCT diagnosed in deed 300 lacuna- focus ,bogus lacuna-focus 202 cases, at one time discover HRCT of up to snuff brain -organise-configurable show then rut CT preponderance.

结果：有489例常规CT正常的病例中发现了腔隙灶，在遇到的502例不易诊断的可疑病灶中，经HRCT确诊的真正腔隙灶300例，伪腔隙202例，同时发现HRCT对正常脑组织结构的显示要较常规CT优越得多。

The Coupled resonator model and the distribution of the electric Field on the axisin the singly periodic cavity chain and biperiodic chain with full-cavity terminationsare analysed by Helmholtz Equation using the symmetry properties of the structure.

本文从场的对称特性来解析整腔结束的单周期和双周期谐振腔链的振荡模式，并给出它们的场分布，作为对用等效电路理论研究谐振腔链的振荡模式和场分布的另一校核方法。

Optical high quality optical microresonators which work in the form of whispering gallery mode, such as microcylinders, microdisks, and microspheres have been achieved. The combination of their ultrahigh quality factor, very small mode volume, and relatively easy fabrication process, makes them potential means for cavity QED experiments.

以回音壁模式工作的高性能光学微腔(包括微柱、微盘以及微球体)以其所具有的超高品质系数，小模式体积，以及相对简单的制作过程，使得它们成为FP型微腔以外的最有前途的腔量子电动力学研究手段。

In the normal uterus, Cytokeratins immunolabelling were detected in glandular cell, luminal epithelial cell, Vimentin immunolabelling were detected in stromal cell and endoblastic cell; CK7 immunolabelling were not detected in any tissue of the yak utenus.

研究结果显示：未妊娠时，泛角蛋白在子宫内膜腺上皮细胞、腔上皮细胞内表达，波形蛋白在子宫内膜基质细胞内表达，平滑肌肌动蛋白在子宫平滑肌和血管平滑肌内表达，牦牛子宫任何部位均不表达角蛋白7；妊娠30天左右时，泛角蛋白在子宫内膜腺上皮细胞、子宫内膜腔上皮细胞、滋养层细胞、内胚层细胞和尿囊细胞内表达，波形蛋白在子宫内膜基质细胞和内胚层细胞内表达，平滑肌肌动蛋白在子宫平滑肌和血管平滑肌内表达，角蛋白7在尿囊细胞内表达，偶尔在腔上皮细胞的细胞核边缘表达；消化法进行原代培养时，组织经胶原酶消化并通过100目和400目筛网组合可以有效地分离原代子宫内膜基质细胞和子宫内膜腺上皮细胞；分离得到的子宫内膜基质细胞活率达90%以上，并可在体外传代7次以上；分离得到的子宫内膜腺上皮细胞活率可达85%以上，并可在体外传代5次以上；RPMI1640培养基最适合子宫内膜基质细胞和子宫内膜腺上皮细胞的生长，维持子宫内膜基质细胞正常生长的FBS添加量为20%，维持子宫内膜腺上皮细胞正常生长的胎牛血清添加量为30%。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。