According to the syntaxis skill of shock wave and the theory of effective charge,the annular conical booster pellet structure is designed.
根据冲击波汇聚技术原理及有效装药理论,设计出环形传爆药装药。
According to the syntaxis skill of shock wave and the theory of effective charge,the annular conical booster pellet structure is designed.
根据冲击波汇聚技术原理及有效装药理论,设计出环形传爆药装药。
The saxophone has a single reed mouthpiece like a clarinet , a conical brass body like an ophicleide, and a metal body with a flared bell .
克斯风外形上有著跟竖笛一样的单簧吹嘴,黄铜色的身形又像低音大号,以及金属制成的喇叭口。
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