machineries
[ machinery ]的复数形式
- " Diesel engine emissions--Test methods--Part 2: For underground mine, rail-traction, marine and other industrial and agricultural machineries"
GB/T8189-1987柴油机排放试验方法第二部分:地下矿、机车、船舶及其它工农业机械用 收藏 - For passive acoustic detection at a short distance, a ship should be considered as a volume sound source, there are three highlight sound-radiated positions along the fore-and-aft direction of the ships, propeller, propulsion machinery and auxiliary machineries.
在近程探测条件下,舰船应被视为体积声源,沿舰船艏艉方向分布有三个明显的声辐射亮点部位[]即螺旋桨部位,主机部位和辅机部位,这就是舰船的三亮点模型。 收藏
开心词场背单词