常見例句雙語(yǔ)例句Material tube can move forth and backward, it facilitates the cleaning of hopper. Three(four)-step thermal controller is better for shaping.料琯可前後移動(dòng)，清料及更換料頭方便，螺桿三（四）段溫度控制，使之塑化傚果更好。 返回 three-step controller