本文针对小型子母式催泪弹，采用经典弹道理论建立了高低压室发射方式的内外弹道数学模型。
Based on conventional ballistics theory, the mathematical model of the ballistic trajectory which adopts low and high pressure chamber fire mode is established for the small cluster tear bomb.
自20世纪80年代以来，大宗出口货物量稳步上升，使新奥尔良成为载驳货船(子母船)和海蜂式驳船资本的世界。
There has been substantial growth in bulk exports since the early 1980s, which has made New Orleans the lighter aboard ship (LASH) cargo and Seabee barge capital of the world.
子母车及轨道布置在穿梭式货架的中间位置；
The shuttle carrier system and guide rail are arranged in the middle of racking;
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