为探索...

This dissertation studied the isolation, purification, culture system optimization and transplantation techniques of goat spermatogonium in vitro respectively to construct an optimized long term culture system to facilitate in vitro manipulate studies for future.

十年来小鼠精原干细胞培养和移植探索的不断完善，为各种哺乳动物及人类精原干细胞培养体系的建立和移植实验提供了新的思路和技术平台。

The identification and study of the control factors that regulate gene expression at different stages are of great value to elucidate the mechanism of spermatogenesis and spermiogenesis. Such study can also provide foundation and cues to investigating the mechanism of infertility and immunological contraception.

作为体内高度分化的雄性生殖细胞，精子发生过程中经历了从形态到生化的复杂变化，在这一过程中有一系列的特定基因按严格的时空顺序转录和翻译，因此寻找和研究不同发育阶段的差异表达的基因，将有助于最终阐明精子发生的机理，并为控制生育和不育机理的探索提供新的线索。

Therefore, it is an urgent task to explore its causes and cultivate more professionals in the rhythmic sportive gymnastics for the 2008 Olympics Games.

因此，探索造成这种现缘的原因，更好地促进艺术体操教学的改革，为2008年奥运会培养更多的艺术体操专业人才，是一项迫切的任务。

They passed down their precious experiences to the late generation in order to catch up with spring tide of the world modernization, turn China to a independent and powerful country.

近代以来，为了追赶世界现代化大潮，实现中华民族的独立和富强，先进的中国人前赴后继地探索中国现代化之路，为后人留下了宝贵的经验教训。

For this reason, optimization methods and key techniques about steady state on-line optimization are studied in this thesis.

有鉴于此，本文以工程应用为目标，对在线优化中涉及的优化理论和关键技术进行了力所能及的探索和研究。

BEIJING, Nov 6 - China supports the peaceful exploration and use of space, President Hu Jintao said on Friday, days after its top air force officials sparked concerns with talk of a "Great Wall of steel in the blue sky."

北京，11月6号-中国支持和平探索和开发太空，胡锦涛主席在星期五说，而几天前胡锦涛主席出席了空军高层领导的会议并发表了主题为"蓝天上的钢铁长城"的讲话。

Cuttage is a breed method in virescence seedling producing, In order to find effective cuttage measures. Gardenia jasminoides, Stephanotis floribunda, Nerium indicum, 3 rooting substrates and plant hormones NAA,IBA were tested in the cuttage experiment, meanwhile all the treatments were dealed with 2 kinds of humidity keeping measures: ones covered with plastic membrane, the others covered none.

扦插是绿化苗木生产中常用的种苗繁育方式，为了探索在生产上成活率较高的扦插措施，本试验以白蝉、非洲茉莉、夹竹桃为扦插材料，采用3种生根基质、以500mg/l NAA和IBA溶液速蘸插穗切口进行扦插生根试验；同时以覆盖塑料薄膜和不覆盖薄膜进行保湿处理对比。

Exploring and research about developing trend of stockjobber and securities market in China have been done. A strategy design based on enterprise reality of China is made for HONGTA SECURITIES LTD. CO. is performed.

本文对我国证券市场发展趋势以及证券公司发展方向进行了一定的探索和研究，然后结合中国企业的实际，为即将成立的红塔证券股份有限公司进行了企业发展战略设计。

By taking stolon pieces as explants, we studied tissue culture techniques of Zoysia matrella.

组织培养技术在草坪上的应用和研究，除了为繁殖少量的优良种质外，主要是进行遗传育种探索。

This article tries to analyze the background of China s anti-stowaway issue, the difficulties and obstacles we are now facing, and the characteristics and methods of current stowaway, to learn some advanced and successful practices of other count...

本文试从中国反偷渡的背景、所面临的困难，当前偷渡的特点和手段着手总结分析，并借鉴国外的一些成功作法，力图探索出一些适合我国国情的反偷渡对策，为改革开放和社会主义建设服务。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！