常見(jiàn)例句雙語(yǔ)例句The impact method adopts the flange two ends seal, contracting & pressing clamp valve flange back working test.壓緊方法采用法蘭端面密封，抱壓爪夾緊閥門(mén)法蘭背面進(jìn)行工作試驗(yàn)。 返回 back seal test