起确定作用的

In this study, BADH, gene encoding the key enzyme in betaine biosynthesis, which was isolated from Atriplex hortensis, and SeNHX1, a vacuole Na+/H+ anitiporter in Salicornia europhaea L., were used to transform the tobacco to improve the salt tolerance.

本研究拟用耐盐性较强植物山菠菜中的甜菜碱合成关键基因BADH和盐生植物盐角草的液泡膜Na+/H+ anitiporter基因SeNHX1对模式植物烟草进行转化，以确定其各自在耐盐性方面所起的作用。

The purpose of this study was to determine whether Tregs contributed functionally to the mechanisms of graft acceptance.

本研究的目的是确定Tregs在移植物接受机制中是否起作用。

Project management is efficiency management, and it plays a crucial role in the enterprise. The auther is a practicer of this project ,so choosing this topic has important realistic meanings with the expectation of well guiding practice under the application of project management methods system.

由于项目管理意味着效率管理，对企业起着关键性作用，而且作者本身就是该项目实践者，确定此选题以期望用项目管理的方法体系更好地指导工作实践，具有重要的现实意义。

Through establishment different rank membership function, builds judgment matrix and uses fuzzy analytic hierarchy process to draw up the weight considering affects of different parameter in judgment.

本文采用模糊分布法构造基本因素对应不同等级的隶属函数，建立了评判矩阵；并根据不同因素在评判中所起的作用，使用模糊层次分析法确定了相应的权重；运用M？

Recent research by Professor Bloom and his team identified the role played by gut hormones in appetite control.

Bloom教授和他的研究组最近进行的研究，确定了消化道激素在食欲控制方面所起的作用。

A patient's age, general health and subtype may play a role in determining the best treatment plan.

病人的年龄，健康状况，所患白血病亚型可在最佳治疗方案的确定中起作用。

The problem of shift impact in automatic mechanical transmission due to the nonfunctioning of synchronizer in shift process is studied in this paper. The mechanism of shift impact is analyzed and the optimal moving velocity of shift actuator is determined.

文中研究了自动机械变速器在换挡时同步器未起作用而产生冲击的问题，分析了产生换挡冲击的机理并确定了换挡执行机构的最优运动速度。

For the most part, the results from tests in adults have been extrapolated to determine whether the medicines work in children.

在大多数情况下，都是从成年人的测试结果来进行推断，以确定药物是否在儿童身上起作用。

It is important for fracturing design and operation to determine hydraulic fracturing initiation pressure and mode.

确定水力裂缝在井壁处起裂的压力和方式，对水力压裂设计和施工有重要的作用。

Tidal mixing plays a key role in the simulation of the thermal structure of the ocean, and how to calculate the value of the vertical kinematic viscosity coefficient in ocean models is very important.

海流数值模拟从二维过渡到三维，垂直涡动粘性系数的确定成为一个研究热点，潮混合在海洋热结构的数值模拟上起着非常重要的作用。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。