PEPCK催化草酰乙酸成为磷酸烯醇丙酮酸的反应，这是代谢过程中的限速步骤(2)。
PEPCK catalyzes the reaction whereby oxaloacetate becomes phosphoenolpyruvate, a rate limiting step in the metabolic process (2).
由于染料分子较低的氧化还原电位，复杂的结构和空间阻碍使得还原断键反应成为偶氮染料整个矿化过程的限速步骤。
The cleavage of the azo bond is the limited step of the mineralization processes because of the low oxidation-reduction potentials and complex structure.
针对等离子点火器内三维湍流燃烧流场，采取有限速率化学反应模型，模拟其物理化学过程。
This paper used a finite-rate method to simulate the three-dimensional combustion process in a plasma generator.
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