常見例句雙語例句Check for signs telescopic tank can endure the Jib elongation length, whether the leakage phenomenon.作標(biāo)志檢查伸縮臂油缸能否持久保持臂桿伸長(zhǎng)長(zhǎng)度，有無泄漏現(xiàn)象。www.jxcad.com.cn 返回 jib length