从技术上讲，化学燃料火箭的最大速度增长比较低。这就是说，它们的排气速度还不足以将火箭的速度增加到非常快的程度。
In technical terms, chemical rockets have low maximum velocity growth, which means that their exhaust velocities are not high enough to impart very high speeds to the rocket.
反应釜配有安全阀，安全阀采用爆破膜片，爆破数值误差小，瞬间排气速度快，安全可靠。
The reaction kettle equipped with safety valve, that used of blasting diaphragm, blasting by blasting numerical small error, instantly exhaust fast, safe and reliable.
反应釜配有安全阀，安全阀采用爆破膜片，爆破数值误差小，瞬间排气速度快，安全可靠。
The reaction kettle equipped with safety valve, that used of blasting diaphragm, blasting by blasting numerical small error, instantly exhaust fast, safe and reliable.
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