常見例句

雙語(yǔ)例句

• The test stand prepares the ground for a through investigation into drill pump valves.
  試制的實(shí)騐室用泵閥試騐臺(tái)爲(wèi)深入開展鑽井泵泵閥的理論研究創(chuàng)造了條件。
返回 ground test stand