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1·Salts are enriched around electriferous groups of polymer molecules in solution, which formed a salt concentration gradient.

溶液中的盐份富集在聚合物分子的带电基团附近，并形成盐浓度梯度分布。

2·The variation of methane concentration gradient was greater.

甲烷浓度的梯度变化比较大。

3·The movement of a solute down its concentration gradient is called diffusion.

溶质沿着浓度梯度溶解的运动过程被称作分子扩散运动。

4·(chemotactic movement) a TXIS in response to a chemical concentration gradient.

趋化现象：一种对化学浓度梯度的趋化反应。

5·The reaction rate is limited by the concentration gradient of oxygen in the sample.

反应速率受试样中氧浓度梯度的限制。

6·The change of the mass concentration gradient of uranium metal is obviously regular.

铀金属质量浓度梯度变化规律明显；

7·This sets up a chemical concentration gradient that tells stem cells how and where to develop.

形成化学浓度梯度，告诉干细胞如何以及向哪儿发育。

8·Objective To explore the effects of SLC concentration gradient on suppression of tumor immune escape.

目的探讨人次级淋巴组织趋化因子浓度梯度对肿瘤细胞免疫逃逸的影响。

9·The process does not require energy expenditure, and transport against a concentration gradient does not occur.

这种转运过程不消耗能量，也不会导致逆浓度梯度转运的发生。

10·So large ranges of concentration gradient were formed where the water masses displaying different properties met.

因此，当不同理化特性的水团交汇时形成了强的浓度梯度。