You may have to control the precursor gases.

你还得控制在反应中产生它们的气体。

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He could even control bone formation in the mice with the mutated gene by giving them a diet deficient in tryptophan, the precursor of serotonin.

他甚至通过喂给复合胺前体色氨酸缺乏的饲料来控制变异基因鼠的骨形成。

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Researching the influence mechanism of every response condition in the new synthetic technology, mainly research the control and controllable conditions on the precursor .

探讨新的合成工艺中各反应条件的影响机理，主要研究了合成条件对前驱体的控制。

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The treaty lists the agents and precursor chemicals that will be subject to control.

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Considering October of 1987, bubble theorists would likely explain the Oct. 19 crash as a function of a market that similarly spiraled out of control--its impressive rise throughout the '80s a precursor to its ugly, 24.5% collapse.

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