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| 药卷直径炸药卷的直径，普通药卷如用纸或塑料包装时,其药径是指连同包装材料在内的药卷直径，无包装材料的药径称为裸露药径,药径必须小于炮孔直径才能进行装药 | |||
| 仪器芯直径 | |||
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cartridge diameter : 1 phrase in 1 subject |
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