内阻力

Objective To evaluate via CDFI whether there are differences in intratesticular arterial resistance index and testicular volume between infertile men with subclinical varococeles and infertile men without varococeles.

目的应用彩色多普勒超声对亚临床型精索静脉曲张组和无精索静脉曲张组之间睾丸体积与睾丸内动脉阻力指数是否存在差异与不育症之间关系。

And it can greatly reduce the noise, by reducing the vibration of the mechanical material, and also lessen the attrition rate , this innovation is increasing life span and security of a machiner.

可广泛用于减少高速运动物体与空气间的阻力，如：汽车，火箭，火车，飞机，涡轮机和内燃发动机的设计；并大大降低其产生的噪音，降低金属构件损耗率，增加使用寿命及安全性。

The Mobula also includes four exterior hulls to enable its enormous payload float smoothly on the surface of the water, which not only expands to hold the craft but also deflates to minimize drag during the flight, thanks to the built-in hydrofoils.

该Mobula还包括四个外部船体，使巨大的有效载荷浮法顺利表面的水，这不仅扩大举行工艺，而且还最大限度地减少阻力经济学家谢国忠在飞行，由于内置的水翼。

The CDFI showed that the punctiform or strip color blood flow signal were found, which blood current spectrum were like the artery, envelope curves were not clear, monophase or bilateral low resistance.

CDFI 检查显示在囊实肿块内或周边见到点状或条状彩色血流信号，呈动脉样血流频谱，包络线不清楚，呈单相或双向低阻力，Vs为(50.05±5.02)cm/s， Vd为(23.20±4.45) cm/s，RI为(0.43±0.02)。

To test the hypothesis that this resistance is a consequence of these cells developing a stress tolerance phenotype to survive in this milieu , we created osmotically tolerant cells hypertonic HT cells by gradually adapting murine inner medullary collecting duct 3 cells to hyperosmotic medium containing NaCl and urea .

为了检验这一假设这种阻力的后果是这些细胞发展中国家应力宽容型生存在这个背景下，我们建立了 osmotically 宽容细胞逐渐适应小鼠内髓集合管3细胞高渗培养基NaCl和尿素。

Nevertheless, even in the case of diaphyseal fractures it can be beneficial to bend the plate between the screw holes in such a way as to ensure that the different screws face in different directions, increasing resistance to detachment in keeping with the principle of polyaxial anchorage.

然而，甚至在骨干骨折时，遵照多轴固定原则，为保证不同螺钉位于不同方向以提高内植物抵抗分离阻力，在两螺孔间折弯钢板是有益的。

To investigate the significance of the resistance index and pulsatility index in differential diagnosis between the benign and malignant breast neoplasms.

目的 探讨彩色多谱勒超声对乳腺肿物病灶内新生血管阻力指数和搏动指数的测定在肿物鉴别诊断中的价值。

In liver fibrosis, intrahepatic resistance and splanchnic blood flow are increased.

肝纤维化过程中，肝脏炎症、胞外基质纤维化、肝血窦毛细血管化等，无不对肝脏血流动力学造成影响，表现为肝内血流阻力增加、门脉高压出现等。

Inside and outside surface of the wind tunner is level and smooth, the air drag is small, the whole rigidity is strong and the exterior is good looking.

风筒内外面平整光滑，空气阻力小，整体刚性强，外观漂亮。

At the super-low permeable reservior sandstone of Fu and Yang in Daqing Oilfield, many pore throats exist a lot in the types of compacted and restored flakes and curved lamellas while the pore volume of micropore and the thin, compacted and shrunken throat that contribute little to flow take large scale in the total pore space. Thereof high filtrational resistance is caused by much trouble including high content of reservoir shale, serious sensibility to pressure at waterflooding, remarkable effects of undersaturation and water blocks in micropore. A method with laboratory experiment, theoretical confirmation and field application included was adopted to analyze the non-linear flow characteristics, to reveal the deep mechanism of pinhole enveloping macropore and to provide a new technology of improving the development effect. The outcomes aquired are as follows: Multiple cores with different low and super-low permeability were selected to perform seepage experiments by gas, water and oil. Three fields of flow were observed in the reservoir at different low and super-low core permeability. They are pseudo- elastic flow, transition flow and plastic creep flow. So the concept that there was no correlation of rocky absolute permeability with fluid properties that pasted itself was broken up. Two-phase seepage of water displacing oil in uniform super-low permeability shows that the two-phase seepage zone is narrow.

针对大庆油田扶、杨特低渗透油层砂岩孔隙喉道的大小和形态以压实再生型片状、弯片状喉道分布较广，压实、缩小型细喉道型，微孔不可流动的孔隙体积所占总孔隙体积的比例较大的特点；及储层泥质含量高，注水开发中压力敏感性强、微孔隙欠饱和及水锁效应显著，导致流体渗流阻力增大的问题，本文采用室内实验、理论推证和矿场应用相结合的方法，研究、分析了流体非线性渗流特征，更深刻地揭示出小孔包围大孔的机理及产生原因，并提供了改善开发效果的新的技术方法，取得如下成果：选择不同渗透率的低渗透、特低渗透岩心，进行了气、水和油单相渗流实验，揭示出当岩心渗透率不同时，油层内的流体呈现出拟弹性流变、过渡流变、塑性蠕变三种流变区，从而打破了岩心的绝对渗透率与通过岩心流体性质无关的观点；同类特低渗透岩心的水驱油两相渗流实验表明，两相渗流区较窄。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷