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Terms for subject Explosives and Explosive Ordnance Disposal containing four | all forms | exact matches only
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four section cut四面打孔一种在竖井或巷道钻孔的方式。指在距离一个大的中心孔等距离处钻四个孔,四个孔可连接成一个正方形,此后再旋转45。,在上面的四个孔以外较大的距离处再同样钻四个孔
Japan bounds on four sides by the sea日本四面临海
TIME published as a serial this doctor's contributions about cancer research in four issues《时代》分四期连载了这位医生关于癌症研究的文稿