主要问题

Genetic diversity of Juglans are summarized from the level of DNA molecular, the somatic embryogenesis, the establishment of genetic transformation and transgenic research in Juglans. Major

从DNA分子水平系统综述了核桃属植物遗传多样性的研究概况，总结了核桃属植物体细胞胚发生、遗传转化体系的建立及转基因研究进展，分析了核桃属植物分子水平遗传多样性与转基因研究过程中存在的主要问题，并对其应用和发展前景进行了展望。

The main problems and the prospect of the application of laccase for organic wastewater treatment were presented. Contents

本文提出了目前漆酶催化氧化水中有机污染物存在的主要问题，并展望了漆酶降解水体中有机污染物的发展方向。

The main problem with loa is when they are given to customers that don't have the ability to repay them.

贷款的主要问题是贷款客户往往没有能力还贷。

Fetal macrosomia is another major problem.

另一个主要问题是巨大胎儿。

Malunion is a major concern in this group as it can be detrimental to function, and can make future revision, if that becomes possible, extremely challenging.

在此种方式下，畸形愈合是个主要问题，它能影响功能，并在未来可能可以进行的翻修时带来极度挑战。

Under such circumstances, the US foreign trade ideas have shifted from Manchesterism to fair trade, and its foreign trade policy has shifted from free trade to managed trade and strategic trade.

第三章系统分析美国外贸发展中的主要问题、外贸政策的演变，从美国对外贸易发展的角度对美国对华贸易保护做出。。。

Because the skin can influence its performance deeply,the measurement,process control and theoretical calculation of the skin thickness have become the main problems in the processing of microcellular foam polymer.

皮层的存在对微孔结构材料的性能有很大的影响，皮层厚度的测量、工艺控制和理论计算是微孔材料加工中的主要问题。

I will study the risks from the microcosmic direction and the macroscopic direction in this thesis.

这就是本研究课题所期待解决的主要问题。

Introduce the numerical well test and reservoir model combination function into the study, realized the efficient description of the seep cell dynamic percolation model of slot and hole type carbonatite reservoir, such as "moniliform","compound" and so on.

本文针对塔河缝洞型碳酸盐岩油藏特殊的储层、油藏地质特征，以及现行解析试井解释方法在缝洞型油藏试井资料解释中面临的主要问题，开展了有限元数值试井新技术应用研究。

The meaning of the class monitorial system is introduced and the necessity is analyzed in detail.

阐述了导生制和班导生制的含义，分析了实施班导生制度的重要性，并结合工作实践，讨论了目前在实施导生制中存在的主要问题及其对策。

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！