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center of mass system：质心系

center of mass motion 质心运动 | center of mass system 质心系 | center of percussion 撞恍心

center of mass system：质[量]中心系

"质量中心","center of mass" | "质量中心系","center of mass system" | "压力中心","center of pressure"

center of mass motion：质心运动

center of mass effect 质心效应 | center of mass motion 质心运动 | center of mass system 质心系

center of mass coordinate：质心坐标系

center of mass 质心 | center of mass coordinate 质心坐标系 | center of mass law 质心定理

center of mass coordinate：质心座标

仪器中心 center of instrument | 质心座标 center of mass coordinate | 摆吨中 center of oscillation

center of mass theorem：质心定理

center of mass system 质心坐标系 | center of mass theorem 质心定理 | center of oscillation 摆心

center of pressure：压力中心(造船用语

center of pressure 压力中心 | center of pressure 压力中心(造船用语 | center of reticle 十字线交点

center of pressure travel：壓力中心移動

"center of pressure moment","压力矩中心" | "center of pressure travel","压力中心移动" | "center of thrust","推力中心"

center of pressure moment：壓力矩中心

"center of percussion","打击中心" | "center of pressure moment","压力矩中心" | "center of pressure travel","压力中心移动"

center of pressure coefficient：压力中心系数

center of pressure 压力中心,压强中心 | center of pressure coefficient 压力中心系数 | center of range 全矩中心

those：那些

除非在前文中清楚提过,请勿使用指示或人称代词(如"这"(this),"那"(that),"这些"(these),"那些"(those),"它"(it),"他"(he),"她"(she),"他们"(they)). 利用回答一系列问题的方式开发思路. 如"这是什麼?"(what)、"这是哪里和

Board of Trade：商务部

Board of Trade 贸易部 | board of trade 商务部 | board paper 纸板