孔

The results show that the velocity ratio plays more important role than Reynolds number to influence the aerodynamic parameters of internal cooling passage.

结果表明通道平均雷诺数对通道内和孔内的流场影响较小，速比对通道内和孔内的流场的影响较大。

Objective To explore the feasibility and application of laparoscopic appendectomy by silk suture with three trocars.Methods The root of vermiform appendix was stitched up and enwrapped in laparoscopic appendectomy by silk stitches.

目的 探讨三孔缝合打结法在腹腔镜阑尾切除术中的可行性及应用方法在腹腔镜阑尾切除术中，应用三孔丝线缝合及结扎的方法处理阑尾根部、包埋阑尾残端。

The results show that the length of the soil hole increases with the increment of the horizontal and vertical angles o f the declined spade soil opener and the width of the soil hole increases with the increment of the horizontal angle.

试验结果表明，穴孔长度随着水平倾角和垂直倾角的增加而增加，穴孔宽度随着水平倾角的增加而变宽。

With the development of society, more and more sound absorbent material was needed. In this study the characteristics of the binder system containing cement, ceramisite, fly ash and vesicant were investigated.

本文以微孔吸声结构原理为主要设计依据，以抛光砖废料制备的陶粒、膨胀水泥、粉煤灰以及造孔剂、防水剂等为主要原料，采用混凝土成型法成型，研究开发一种无有害成分的环保型吸声材料。

In this paper, a novel composite microporous polymer electrolyte that is made of poly(vinylidene fluoride-co-hexafluoropropylene) and mesoporous SBA-15 was prepared(designated as SBA-15 CMPE).

以介孔分子筛SBA-15为造孔剂和填料，研究出一种无需使用增塑剂制备复合微孔型聚合物电解质(SBA-15 CMPE)的新方法。

Classification and principle of rigid waterproofer;2. The circinal cavities were found in calcium alginate beads and the cylinder holes were observed in zinc alginate beads from the SEM,which indicated that the volume of fraction of zinc alginate polymer was relatively bigger and the zinc alginate polymer chain was more rigid than that of calcium alginate .

凝胶的SEM照片可见，海藻酸钙的冷冻干燥颗粒内为较大的圆孔，海藻酸锌凝胶内为较小的长孔，表明海藻酸锌高分子链在凝胶颗粒中的体积分率相对较大同时刚性较强；卵清蛋白从海藻酸凝胶颗粒中释放的试验结果表明，由于上述海藻酸锌凝胶的特性，导致海藻酸锌对卵清蛋白扩散阻滞作用相对较强；根据试验数据计算得卵清蛋白在海藻酸钙、海藻酸锌凝胶颗粒中的扩散系数分别为1。

At present, more screen varieties, the product is not uniform, but it is important to clear the screen mesh size and diameter determines screen of perforated and whee thickness, at the same time, influenced by the online photographic emulsions, hosting the content, obviously, perforated, the screen can be primary processing rough coated photographic emulsions in respect of this exposure time should also be the longer exposure time otherwise.

纲后，丝网品栽较众，产物参不差不齐，但有一点务必不合明，丝网的纲数与丝径不决着丝网的开孔率和网布薄度，同时，又感化着感平乳剂的网上驻留度，较着，开孔率不小、丝线不细的丝网可涂布的感平乳剂不离薄，所以曝平工夫也答相答加长，反之则曝平工夫缩长。

Wormholes known as Schwarzschild wormholes are theoretical bridges between areas of space that are thought to be found in the center of a black hole and white hole, joining two universes.

以Schwarzschild虫孔闻名的虫孔被认为是黑洞和白洞中心发现的空间区域之间理论上的桥，连接二个宇宙。

Mesh sizes 16 and 32 are perforated stainless steel, 50 to 200 mesh filters are stainless steel wire cloth with perforated stainless backing and internal wire coil to prevent filter collapse or screen blow-out.

网孔规格尺寸16和32采用穿孔不锈钢，网孔规格尺寸50至200采用不锈钢金属丝布并用穿孔不锈钢衬背和内置金属丝，用于防止过滤器瓦解或过滤网吹出。

Because of the connecting rod is one of dyadic engine of piston and main compression engine part, whose larger end hole and crank shaft link up , the small head hole links up by the wrist pin and the piston , whose effect is that the piston gas pressure is transmitted to the crank shaft , collect crank shaft gas in driving but setting a piston in motion to compress a cylinder.

因为液压是活塞式发动机和压缩机的主要零件之一，其大头孔与曲轴连接，小头孔通过活塞销与活塞连接，其作用是将活塞的气体压力传送给曲轴，又收曲轴驱动而带动活塞压缩汽缸中的气体。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。