起作用

In the locational conditions, some have no relation, some have decidable function on the locational selection will which are called locational factors.

区位条件有的对区位选择意志起决定作用，有的毫无关系，那些起作用的区位条件就称为区位因子。

Japan semiconductor tradeconflict in 1980s and the making of North American Free Trade Agreement in early 1990s, the thesis aims to demonstrate the application of role theory, the bureaucratic politics and the interbranch politics models in examining a bureaucratic agency's role in the process of trade policymaking.

通过对贸易代表办公室在上世纪八十年代美日半导体贸易冲突和九十年代北美自由贸易协定制定过程中所起作用的两个案例分析，作者旨在证明运用角色理论、官僚政治模式和跨机构政治模式讨论决策机构在贸易决策过程所起作用的可行性。

Alexander has demonstrated an iodide peroxidase in animal thyroid tissue and believes this enzyme is responsible for the iodination reactions through formation of an oxidized iodinating intermediate.

Alexander已经证明在动物甲状腺组织中有一种加碘过氧化物酶，并相信该酶对加碘反应起作用，它是通过形成一个氧化态的碘中间体而起作用。

The experimental data demonstrated that there was a nasalward directional preference in oath OKN system under both close loop and open loop conditions, and the nasalward OKN gain evoked by stimulation of nasal retina was much higher than that at temporal retina. ms indicates that OKN nasalward preference is mairily derived from the nasal retina, i. e. the direct path1Vay of OKN dominates the indirect pathway in cat's OKN system. The gains of temporalward and nasalward OKN from temporal retina are much less than those of nasalward OKN from nasal retina. It is suggested that the indirect pathway of OKN in the cat only possesses a supplementary function, Which probably plays an important role in temporalward OKN eye-movments in relation to binocular vision.

实验结果显示：高速度刺激的闭环OKN反应及开环OKN反应均对鼻向运动刺激有明显的方向选择性；半侧视网膜刺激时，鼻侧半视网膜的鼻向OKN增益明显高于颞侧半视网膜的鼻向增益，说明猫的OKN眼动反应以跟踪鼻向运动为主，并且这种对鼻向运动刺激的选择性主要来源于鼻侧半视网膜，亦即来源于OKN直接通路；颞侧半视网膜的鼻、颞向眼动增益均明显低于鼻侧半视网膜的鼻向眼动增益，说明猫的OKN系统的间接通路在OKN眼动控制中起辅助作用，并可能主要对颞向OKN眼动起作用从而与双眼视觉功能相关。

A normal concentration of calcium ion in perilymphatic fluid is necessary for outer hair cell to produce DPOAE.

提示外毛细胞在产生DPOAE中并非以毛细胞的电运动性机制起作用，而是与一般肌纤维相似的收缩机理起作用，需要钙离子的中介。

MCM2～7 proteins are related to each other and form hexamer,functioning in the replication as DNA helicases at the initiation step and elongation step,to ensure the DNA precisely duplicated and segregated into two copies.

其中，MCM2～7在生物体中以六聚体形式存在，在DNA复制起始和延伸过程中起DNA解旋酶作用，对确保在单个细胞周期中的DNA精确复制与传递中起作用。

We already have an idea that the cecum in some animals works the same way," he said."But how, for example, do biofilms work in frogs and other species with no cecum and no appendix?

他说：&我们已经有了这种想法，就是盲肠在一些动物体内起作用的方式与人相同，但是譬如青蛙以及其他一些没有盲肠或阑尾的物种，生物薄膜又是如何起作用的，目前不得而知。&

The effect of calcium antagonists on auxin-induced elongation and on the expression of two auxin-regulated gene in pea epicotyls.

曾有文献报道，细胞壁在某些信号的传递上起着重要的作用［12］，Ca2+在细胞壁中可能通过影响细胞中的某些 Ca2+受体而起作用［13］。

Chengdu University of Technology Institute of Information Engineering Professor Zhang Zhenggang: I use this hand-wash water, once seen, but in the light side does not work, the role of Mao's side, and immediately show out.

成都理工大学信息工程学院章正刚教授：我用这个手沾上水，马上就看出来了，可是在光的那一面不起作用，毛的那一面起作用了，马上就呈现出来了。

The most important thing that we can do right now is to re-engage the American people in the process of governance, to get them excited and interested again in what works and what can work in our government.

他说：&我们现在能做的最重要的是在管理国家的过程中让美国人民重新参与进来，让他们在那些能起作用、在政府内起作用的方面能感到兴奋和有兴趣。&

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。