通过改变各种外界环境条件，均未得到目的蛋白。
Although varible environment conditions were tested, the target protein had not been obtained.
人和哺乳类动物在进化和适应外界环境条件过程中所形成的屏障机能是由神经系统来调节的。
The barrier function of human beings and mammals, formed during their evolution and in the process of adaptation to the environment, is regulated by nervous system.
通过提供不同外界环境条件的方法，研究了土壤含水量、播种深度及除草剂虎威对鸭跖草出苗的影响。
The effects of different soil water content, depth of sowing and dose of fomesafen on dayflower emergence were studied.
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