常見例句雙語例句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)為深入開展鉆井泵泵閥的理論研究創(chuàng)造了條件。 返回 ground test stand