固液混合火箭发动机的燃面后退速率低是制约该类发动机应用的主要因素。
The low fuel regression rate in hybrid motor is the principal factor affecting the application of the motor.
为了准确地得到推进剂混合物，专利方案里展示了一个利用3 - D立体平版印刷术打印出燃料的混合动力火箭发动机。
To achieve the right mixture of propellant, the patent presents a hybrid rocket motor that would use 3-d stereolithography to essentially print the fuel.
我们已经决定给猎犬号安装的猎鹰混合式火箭发动机，这种发动机采用一种背部为简单夹具和前部为快速释放式的接驳器的方式工作。
The installation of the Falcon hybrid rocket has been decided, using a "simple" (in rocket science terms! ) clamp at the back end and a quick-release connector at the front.
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