常見(jiàn)例句雙語(yǔ)例句The piston of shoe type brake in shovel loader is used to be chrome plated, which is poor in processing efficiency and expansive in cost.裝載機(jī)蹄式制動(dòng)器的活塞，一直采用外表面電鍍鉻工藝，加工效率低，成本高。 返回 shovel type loader