上管

But we could recognize the efferent ducts because the cilia of the ciliated cells became red using HE staining .The epithelial cell height became higher and higher with time passing by.

睾丸输出小管的扩张，上皮高度的下降变得扁平使它的管腔也变得圆滑，但是在HE染色下纤毛上皮细胞的长长的纤毛被染成红色倒成了辨别睾丸输出小管的标志。

Firstly, a computational formula of RS which used widely in pipelines design is introduced. Secondly, a correction formula is deduced based on Spangler model. Thirdly, a model of buried pipelines is analyzed with finite element program. After compared with different results, it is found that the result from the correction formula matches with the result of FE better than that of the design code.

以现行的管道结构设计规范为例介绍了目前管道工程设计中常用的管土相对刚度计算公式，在Spangler管道土压力模型基础上推导了计算埋地管道管土相对刚度的修正公式，并采用有限元模型分析了上埋式管道的管土相互作用机理。

The die pad having a through hole is embedded in a center portion of the base so that the die pad's upper and lower surfaces are exposed, and the imaging element is fixed on the die pad.

在基板的中央部，埋入具有贯通孔(12)的管芯垫(11)，管芯垫的上下面露出。摄像元件固定在管芯垫上。

Based on gun bore radial wear Δdmax as discrimination condition of barrel life the mathematical model for predicting melt-erosion of gun-barrel is established which is employed in analyzing factors affecting the life of gun such as material, gun powder,firing conditions and so on. It is pointed out that active cooling technology is an effective method for solving many problems concerned with heat transfer each time the gun is fired.

文中由身管寿命判别条件△d_建立了身管熔化烧蚀预测计算模型，从原理上对各种延缓烧蚀速度、提高身管寿命的措施，如采用内膛镀铬、使用冷火药和护膛剂等进行了阐述；同时基于该模型指出采用身管主动冷却技术是延长火炮身管寿命最有效的措施之一。

On the basis of the existing sieving method of sieving thyratrons, serving the typical fuze detonating circuit as the circuit of sieving thyratrons, and applying the operation conditions of the typical fuze detonating circuit in the sieving circuit, we can measure more accurately the turn on voltage, trigger voltage, turn on time, and leak of electricity of the thyratrons.

在现有闸流管检测方法的基础上，将实际的引信起爆电路作为闸流管的检测电路，将起爆电路的工作条件施加于检验电路，可以更准确地给出闸流管的导通电压、触发电压，同时测量出闸流管的导通时间以及闸流管在关断状态下的漏电流。

Water inside vacuum heat- collection tubes; since the hot medium inside vacuum tubes floats up and cold one goes down due to respective specific gravity, hot and cold mediums convections up and down to cause the heat conduction, furthermore transfer the heat to the related working medium in the heat tubes, the working medium sorbs the potential heat and becomes steam to rise up to the condensing section from the tube heat evaporating section; it emits the heat in condensing section to change again into liquid working medium; it flows back to evaporating section under the gravity action, the emitted heat is transferred into the water inside water tank or tube group by means of the heat-conduction through heat tubes condensing section; it makes the cold water in water tank into hot water in the repeated way.

阳光透过全玻璃真空集热管的外玻璃，照射到涂覆在内玻璃管外表面的选择性吸收涂层上，涂层将太阳的辐射能吸收并转化为热能，通过内玻璃管壁导热，传递给真空集热管内其液态传热介质，由于真空集热管内热的介质因比重小而上浮，冷的介质因比重大而下沉，冷热介质上下对流传热和导热，再通过热管的金属壁导热，将热量传递给热管内其相变工质，工质吸收汽化潜热而变成蒸汽，由热管蒸发段上升到冷凝段，在冷凝段放热冷凝，又变成液态工质，在重力作用下流回蒸发段，所放出的热量通过热管冷凝段金属管壁导热，传递给水箱或联集管内的冷水，周而复始，于是便将水箱内的冷水全部加热成热水。

Histologically, the seminiferous tubules contained numerous Sertoli cells and more Sertoli-spermatozoa complexes, accompanied by the depletion of Leydig cells with deeply stained nuclei. Mature spermatozoa were stored up in the epididymis, but only a few in the efferent ducts. In the second place was testicular atrophy（32/120; 26.7%）. The seminiferous tubules showed moderate to severe inactivity of spermiogenesis with evidence of only spermatogonia, spermatocytes and Sertoli cells. The Leydig cells were obviously decreased in numbers associated with decrease of lipid droplets in their cytoplasms. Testicular hypoplasia was the third disorders（22/120; 18.3%）. Only a few spermatogonia and Sertoli cells appeared without any spermiogenesis. The associated changes was decreased in Leydig cells and fibrous hyperplasia in the interstitium.Epididymal stones were sometimes found（12/120; 10%）. Grossly, yellowish-white nodules with various sizes and firm in consistency were observed in the epididymis and the front efferent ducts. Microscopically, the epididymal ducts were dilated with voluminous spermatozoa storage, even showed calcification in severe cases. The deposited calcium salts were stained positively by Von Kossa and Alizarin red methods.Amyloidosis was also detected in 10 roosters（8.3%）. Eosinophilic, homogeneous, amyloid-like substances were deposited mainly in the testicular interstitium and the periphery of blood vessels. These substances showed positive reaction by Congo red staining. Five roosters（4.2%）had Marek's lesions in the testis, epididymis and peripheral nerves with infiltration of pleomorphic lymphocytes. Only one case showed epithelial necrosis of seminiferous tubules accompanied by fibrous proliferation in the interstitium.

结果发现，在总共搜集的120个病例中，其中因年老所导致的产精力不佳为最多，占38例（31.7%），於镜下可见大量精虫黏附於Sertoli cell的表面，并可见Sertoli cell数量明显增多而Leydig cell明显减少，且其细胞核呈现浓染的现象，而在其副睪中仍可见到成熟精虫蓄留於管腔中，但在其输精管内却只有少量精虫存在；其次为睪丸萎缩，占32例（26.7%），镜下可见中度至重度无造精作用，其生精小管中只见到精母细胞、精原细胞及Sertoli cell存在，但Leydig cell数量明显减少且其细胞质内的脂质也明显减少；睪丸发育不全，占22例（18.3%），於生精小管内只见到精母细胞及少量Sertoli cell存在，不见造精细胞分化，於生精小管间质可见Leydig cell减少并伴随结缔组织增生；副睪结石，占12例（10%），肉眼下可在副睪及输精管前段见到黄白色大小不一的结节，触感坚硬，於镜下可见副睪管扩张并有大量成熟精虫蓄积，严重时可见钙化现象，以Von Kossa及茜素红染色均呈阳性反应；类淀粉沉著症，占10例（8.3%），镜下在睪丸间质及血管周围可见粉红均质样的物质沉积，以刚果红染色成阳性反应；马立克病，占5例（4.2%），镜下可在睪丸、副睪实质及周边神经内均可见到嗜碱性大小不一的淋巴样细胞浸润；睪丸坏死，占1例（0.8%），镜下可见生精小管上皮细胞坏死脱落及间质结缔组织增生。

The manufacture of copper core of automobile radiator includes coating tinned or bared copper cooling pipe; roasting assembled main core inside braze welding furnace at 230-280 deg.c for 30-60 sec; welding main sheet to cooling pipe via conventional process; and welding the copper lid opening for the water chamber with brazing agent without solder and welding filament.

一种铜质汽车散热器主芯的制造方法，其先将镀锡冷却管或裸铜冷却管外壁分别进行覆膜处理。将组装好的主芯主体置于铜钎焊炉内于230～280℃温度焙烧30～60秒。主片与冷却管间采用常规的方法焊合。还可以将组装好的主芯主体每排冷却管上摆放一根外表面涂有无钎料钎剂膜的锡焊丝，它们贴在冷却管与主片结合处。

Based on the experime ntal researches some of heat pipe apparatus are developed, such as, giant heat p ipe steam generator, high temperature heat pipe air furnace and separate-type heat pipe steam generator at high temperature and with high heat flux. All of t hese show the progress of heat pipe tec hnology research and development in recent years.

在试验研究的基础上，又相继开发了一系列热管设备，如高含尘气体下的大型热管蒸汽发生器、燃煤高温热管热风炉以及高温高热流密度下的分离式热管取热器，从而反映了近年来热管技术研究开发的一些进展情况。

During past 2 years, we produced milkly white fused quartz tubing, non-ozone quartz tubing, UV stop quartz glass tubing, sunshine quartz tubing on the basis of common quartz tubing, they are widely used in electric industry, electric lamp-house, chemical, nuclear industry, etc, and won users'trust and favorable comments .Our co. also holds advanced full analyse and finished product and detect system. The 2 sets of infrared photometers have being used in the process of producing, and control effectively the content of hydroxy in the quartz products.

公司成立两年多来，在生产普通石英管的基础上，相继推出乳白石英管、无臭氧石英管、滤紫外线石英管、以及太阳光石英管等，广泛用于电子工业、电光源、化学、核工业等领域，深受用户的信赖和好评。

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。