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理论,设计出环传爆结构。
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理论,设计出环传爆结构。
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 .
萨克斯风外上有著跟竖笛一样单簧吹嘴,黄铜色身又像低音大号,以及金属制成喇叭口。
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