直角三角形_馆档网 ... "单位制"," system of units" "系统阻力"," system resistance" "循环处理砂"," system sand" ...

全钢玻化砖防静电地板价格及生产厂家 -... ... 中心载荷 Concentrated 系统电阻 System resistance 防火性能 Fire ...

采暖通风与空气调节术语标准中英文对... ... swirl diffuser 旋流风口 system resistance 系统坐力 tangential fan 贯流式通风机 ...