常見(jiàn)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)驗(yàn)室用泵閥試驗(yàn)臺(tái)為深入開(kāi)展鉆井泵泵閥的理論研究創(chuàng)造了條件。 返回 ground test stand