交响乐队中的重型火炮是啥？
超重型火炮要么固定设置，要么装在火车上。 固定火炮往往设置在坚固的混凝土和钢铁堡垒中。
The super-heavy batteries are either fixed or on railway mountings, and fixed batteries are often In strong concrete and steel forts.
而在这种系统得到改进之后，一些更重型的直瞄火炮也装备了这种设备。
This was improved and some heavier direct-fire artillery was equipped with it as well.
而在这种系统得到改进之后，一些更重型的直瞄火炮也装备了这种设备。
This was improved and some heavier direct-fire artillery was equipped with it as well.
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