制约因素的英文：
n. confinement factor
- The main brake on commercial biotech in China, though, has been its dearth of venture capital
中国商用生物技术的主要制约因素是风险资本的缺乏。
n. 监禁；分娩；限制
- The accommodation was confined, but neat.
这间房舱虽小，但是非常干净。 - Uncomfortably tight and confining.
不适地紧绷的，不适地束缚的 - It is beyond the confines of human knowledge.
这超出了人类的知识范围。 - He was confined to bed by illness.
他因病卧床。 - This is outside the confines of human knowledge.
这超出了人类知识范畴。
n. 因素；因数；代理人
v. 做代理商；分解…的因子，将…分解成因子；把…作为因素考虑
- factor of amplification
仪器放大率 - susceptibility factor
敏感因素|感受性因数 - These amplify the effects of other factors.
这放大了其他因素的影响。 - Cost can be a deciding factor.
价格恐怕是一个决定因素。 - Each factor has been numbered.
每个要素都编了号。