機殼外徑 的英文怎麼說
中文拼音 [jīkéwàijìng]
機殼外徑
英文
housing dia-
The second strategy include that a metallic nickel ( ni ) core was encapsulated with a polymeric polystyrene ( pst ), and then coated with an outlayer of dielectric titania to form ni / pst / tio2 composite particles. the morphology and structure of the particles were characterized by tem, sem, tg - dta, xrd, and ft - ir
其次，以聚苯乙烯包覆金屬鎳粉，形成了ni pst磁性聚合物微球，然後在該微球外包覆二氧化鈦，制得了粒徑均勻、形態良好的鎳聚苯乙烯二氧化鈦（ ni pst tio _ 2 ）無機-有機結構的多層核-殼復合微球。Energetic materials for defense - safety, vulnerability - technical data document of the diameter 90 mm gun propellant vehicle with an inflammable skirt
國防用高能材料.安全性易損性.帶可燃外殼的直徑90mm機炮推進裝置的技術數據文獻Energetic materials for defense - safety, vulnerability - technical data document of the diameter 90 mm gun propellant generic hardware with a metallic case
國防用高能材料.安全性易損性.帶金屬外殼的直徑90mm機炮推進裝置的技術數據文獻The reason that the noise is lower with inclining tongue is : 1 ) both the radius of the tongue and the gap between the tongue and the blade are changed across the wideth ; 2 ) the phase angle between blade and the tongue is changed across the wideth, therefore the peak value of the noise do not appear at the same time, so the peak value of the noise with inclining tongue is much lower than the straight one. the influence of the expanded angle of the shell of the fan on the noise was invested experimentally, and the optimal angle was got
傾斜蝸舌降噪的主要原因是：一是改變了從氣流入口側到風機輪盤的蝸舌間隙和蝸舌半徑；二是改變了葉輪與蝸舌非定常相互作用的相位差，使其產生噪聲也有相位差，迭加的結果進一步降低了噪聲。另外，試驗研究了不同蝸殼擴張角對風機噪聲及效率的影響規律，蝸殼擴張角選擇當否，對效率和噪聲影響較大。分享友人