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To investigate whether the expression of cdc2 and cyclin B1 in spermatogenic cells during spermatogenesis is actually a temperature dependent event, in situ hybridization, Western blotting and immunohistochemistry analysis were used to study the expression of cdc2 and cyclin B1 in normal and cryptorchid testis. Results showed that heat would differentially hurt male germ cells in different developmental stages during spermatogenesis, especially the pachytene primary spermatocytes. Most of spermatogonia in contralateral cryptorchid testis were not harmed fatally by heat as yet, indicating that spermatogonia could resist to beat to a certain extent. In this case spermatogonia could develop to pachytene/diplotene primary spermatocytes, but they could not acquire the ability to complete the transition from mitosis to meiosis, and then appeared to go through apoptosis. Therefore, we could not find the descendants of meiosis: secondary spermatocytes and round spermatids, elongated spermatids and spermatozoon. The abdominal temperature had no significant influence on the transcription of cdc2 and cyclin B1 in the spermatogonia and pachytene/diplotene primary spermatocytes. In normal rabbit testis, cyclin B1 increased in the pachytene/diplotene primary spermatocytes before meiosis and reached its peak in the spermatids.

为了解精子正常发生过程中cdc2和cyclin B1表达的低温依赖性，我们利用原位杂交和免疫组化等方法，研究了正常和隐睾精子发生过程中cdc2和cyclin B1的转录和翻译调控活动，结果表明：（1）热对各阶段的雄性生殖细胞都有损害，粗线期的初级精母细胞尤为敏感，实验性隐睾内的精原细胞尚未完全受到"致命"影响，说明精原细胞对热有一定的耐受性，但即使成为粗线期／双线期初级精母细胞，却未能获得由有丝分裂过渡到减数分裂的能力，呈现不同程度的凋亡，所以在整个切片中找不到源自减数分裂的产物----次级精母细胞、圆形精子细胞，更谈不上长形精子细胞和精子的形成；（2）腹腔高温未明显地影响隐睾精原细胞和粗线期/双线期初级精母细胞中cyclinB1和cdc2的转录，说明高温并不是通过影响cyclin B1和cdc2的转录活动而导致生精过程阻断的；（3）正常兔睾丸组织中，〓在精原细胞和粗线期／双线期精母细胞中均有表达：cyclin B1蛋白在减数分裂前期的粗线期／双线期初级精母细胞中的表达量增加，于变态末期的精子细胞中达高峰。

Basing on thermo-simulation in laboratory, experimental study was accomplished to analyze the function mechanism of foaming agent and the foaming influence of its decompound production. The results indicated: function of foaming agents was due to their decompound and inter-reaction at high temperature. And some decompound production of foaming agent can reinforce the foaming ability of refining slag.

采用实验室模拟的方法，针对钢包精炼炉常用发泡剂的作用机理以及发泡剂高温分解产物对熔渣泡沫化性能的影响进行了研究，结果表明：发泡剂的作用主要来源于其组成物质的高温分解以及相互反应；发泡剂分解后部分产物作为高熔点粒子存在于熔渣中，提高了精炼渣的泡沫化性能。

This system can change the synthetic wavelength chain according to the distance to be measured. The inphase state of the interference signals, which is difficult for phase measurement, can be avoided by changing the wavelength freely. In addition, this system can realize the dimension calibration between the workpiece and the gauge block at a shortest measuring chain.

该测量系统可以根据待测距离选择合成波长链完成由粗测到精测的过程、通过波长的调谐能够避免零相位的测量，并在测量链最短的情况下实现了被测量和量块的直接比对，适用于孔径、平行平面间距的测量。

Her main scientific interests are comparative planetary interiors and rotation, as well as modeling tides and nutation of the Earth, Mars, Mercury and Venus.

她的主要研究专长在于各行星的内部结构和自转的比较。亦精于地球、火星、水星和金星的潮汐作用和地轴的转动的计算。

Discard the common things, focus on the narrate of particular and aberrance things; Use the description of present and future tense to give us a feeling of reality which shows the irresistible of foreordination. Fully shows the theme of "Tragedy Foreordination "; Through the change of visual angle make the narrate naturally revealed; Use the nicety and pithiness image description impel reader's expand of emotion; Through the exactitude language to break the normal sense of emotion.

余华用重复与循环的结构去成就特殊的人物命运，抛弃现实常规事件，钟情于对非常规及变异事件的叙述；以一种现在式或过去将来式的时间描述带来身临其境的感觉，展示了宿命的不可抗拒绝性，充分体现了"悲剧宿命"的主题；通过变化的视角让叙述以最自然的形态展示出来；使用准确有力的意象描写，推动读者情感发展；通过精准的语言表达，突破常规情感体验。

Our fabrications expertly mimic the natural environment in every way. over 10 years experience designing and constructing artificial rockwork, The techniques allow for the creation of spectacular large outcropping of natural features which could never be replicated using natural stolen features.

各类造型雕塑，以及特效领域的开发研制，更是推广这些产品技术的先锋，我们精于环境艺术及相关产业，超过10年的假山造景的设计和施工经验，使我们的技巧可以建造出大型，壮观，引人入胜的山体景观，这是用从自然界取石进行拼装无法达到的。

Two polar nuclei move to the micropylar end before sperm is released in a gap between the egg cell and central cell and subsequently taking off cytoplasm one after another. The sperm nucleus moving to the egg nucleus runs faster than the one to the polar nuclei. It fuses with the polar nuclei that are moving towards the antipodal cells at the chalazal end.

精子释放前，两极核移向卵细胞的合点端；两精子释放于卵细胞与中央细胞的间隙后，先后脱去细胞质，然后分别移向卵核和极核，移向卵核的精核快于移向极核的精核；精核与两极核在向反足细胞团方向移动的过程中完成雌雄核融合。

BUT THE FACT THAT DAY-TO-DAY BEHAVIORS IN SHENZHEN AND BANGALORE HAVE DIRECT AND IMMEDIATE EFFECTS ON PEOPLE FROM WICHITA TO STRASBOURG, FROM RIO DE JANEIRO TO SYDNEY, OR THAT UNSCRUPULOUS LENDERS AND CARELESS BORROWERS IN THE UNITED STATES CAN UPEND ECONOMIC EXPECTATIONS EVERYWHERE ELSE IN THE WORLD, NO MATTER HOW CAREFULLY OTHERS HAVE PLANNED, MEANS THAT THERE ARE MANY MORE MOVING PARTS THAT AFFECT EACH OTHER.

但是，在深圳和邦加罗尔，日复一日的现实生活是直接相关的，对从威奇托到斯特拉斯堡，从里约热内卢到悉尼的人们产生直接影响。再比如，不管你多么精于计划，美国境内那些肆无忌惮的贷款人和无忧无虑的借款人还是能够颠覆世界其他地区的经济预期，这意味着有更多的移动部件在相互影响。

The apoptosis of 80 mg/kg ﹒ d group was mainly located in spermatogenous cell and first spermatocyte; the apoptosis of 120 mg/kg ﹒ d group was mainly located in spermatogenous cell , first spermatocyte and spermatocyte of the second order; the apoptosis of 240 mg/kg ﹒ d group was mainly located in spermatogenous cell and first spermatocytes, and seemingly, the apoptosis located in first spermatocyte was dominant; whereas the apoptosis of 480 mg/kg ﹒ d group was located in all levels spermatogenic cells.

结果表明：各试验组小鼠生精细胞凋亡指数随着浓度的升高有增加的趋势，而且与对照组差异显著（ P ＜0.05或 P ＜0.01）。80 mg/kg · d 组凋亡细胞主要定位于精原细胞和初级精母细胞；120 mg/kg · d 组凋亡细胞主要定位于精原细胞、初级精母细胞和次级精母细胞；240 mg/kg · d 组凋亡细胞主要定位于精原细胞、初级精母细胞，以初级精母细胞为最多；而480 mg/kg · d 组凋亡细胞定位于各级生精细胞。

For Ryback, the essence of Hitler is "a dime-store theory cobbled together from cheap, tendentious paperbacks and esoteric hardcovers, which provided the justification for a thin, calculating, bullying mendacity." But there was more to it than that. While Hitler had no original thoughts, he wasn't a primitive carnival barker.

Ryback 觉得，希特勒的本质就是&他慢慢的积累从不值钱的，带偏见的简装书，和小圈子里流行的精装书里得来的极其离谱的理论，然后给他那浅薄的，精于算计的，咄咄逼人的谎言找到辩护理由。&

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。