知識貝殼
知識貝殼
所屬欄目：水輪機與水泵專業英語
The casing of a crossflow turbine ismade of structural steel; it is robust, resistantto impacts and frost. If there is high contentsof abrasive material in the water (e.g. sand,silt) or if the actual composition of the wateris considered aggressive (e.g. ......（本文共 353 字 ） [閱讀本文] >>