这样又导致了纳米管的导电性发生变化，而我们可以根据导电性变化的多少来鉴定每一种毒气。
This, in turn, causes the conductivity of the nanotubes to change-how much is a characteristic of each gas.
而在神经与肌肉之间充当“信使”的是一种叫做乙酰胆碱酯的酶，神经毒气正是通过抑制这种酶的工作来发挥作用的。
The gas inhibits acetylcholinesterase, an enzyme responsible for the breakdown of a chemical messenger responsible for muscle control, which is how it causes much of its ill effects.
1978年，注射式死刑作为一种相较于绞杀、射杀、电刑以及毒气室等执行死刑的手段更为人道的选择方案而引入美国。
Injections were introduced in 1978 as a supposedly more humane alternative to other forms of capital punishment-hanging, firing squad, electrocution and the gas chamber.
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