棕尾别麻蝇为腐食性昆虫，体形较小，对环境适应能力强，生殖力强大，逐渐成为一种难以防治的卫生害虫。
Sarcophaga peregrina is a pest of health, with a small body, a great power in reproduction and strong adaption to environment.
潜水电机壳体，包括机架，尾轴承架，法兰和罩盖总装，必须采用符合美国材料试验协会ASTM A - 48类别30标准的、密实的铸铁或更好的材料制造。
The submersible motor enclosure including frame, end brackets, flanges and cap assembly shall be constructed of close-grained cast iron, ASTM A-48, Class 30 or better.
华司组合机，液压自动铣槽机、钻尾螺丝机、选别机、深孔机、攻牙机、自动车床以及夹链胶袋头，及来图订做各类机机械。
Our main products include washer assembly machines, hydraulic automatic slot milling machines, check weighers, deep-hole drilling machines, and zip lock bags. We can also customize various machines.
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