back vane 中文意思是什麼

back vane 解釋
背葉片
  • back : n 1 背，背部；背脊；背面，反面；背後，後部，後面，裏面。2 （指）甲；（刀）背；（手）背；（書）背...
  • vane : n 文恩〈姓氏〉。n 1 【氣象學】風向標，風信旗；〈比喻〉隨風倒的人。2 （風車、推進機等的）翼，（導...
  1. Said catherine, leaning back, and returning his look with a suddenly clouded brow : her humour was a mere vane for constantly varying caprices. you and edgar have broken my heart, heathcliff

    凱瑟琳說，向後仰著，以突然陰沉下來的臉色回答他的凝視：她的性子不過是她那時常變動的精神狀態的風信標而已。
  2. The principle, the structure, the prevention of back - streaming of pump oil, the reducing noises, the designs and the calculations of the pump are described in detail in order to systimatically understand, correctly use and reasonablly maintain the sliding vane rotary pump to benefit enterprises

    作者從該泵的原理、結構、防止返油、降低噪音以及設計計算等諸多方面進行了詳細論述，其目的在於使廣大用戶對旋片真空泵有一個比較系統的了解，從而正確使用和合理維修旋片真空泵將給企業帶來可觀的經濟效益和社會效益。
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