The automatic mechanism is the key and difficult point of gun development.
自动机是火炮研制的关键和难点之一。
International cooperation was to replace the previous automatic mechanism.
用国际间合作来代替过去自行调节的机制。
Different types of gun automatic mechanism reflect different design idea and style.
不同型号的火炮自动机体现不同的设计思想。
Different types of gun automatic mechanism reflect different design idea and style.
不同型号的火炮自动机体现不同的设计思想。
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