抽真空英文

楼主，貌似咱们是同行，加我好友，咱们好好沟通下。506840834

We can not vacuumize.The wool attached on the paper would be distorted if being vacuumized.We would vacuumize and more paper would be packed in the bag if there were not any attachment on the paper.

V法铸造是英文Vacuum（真空）一词的字头，是真空密封造型的一种，用的是塑料薄膜抽真空使干砂成型的原理,又叫“负压造型法”或“减压造型法”。这样出来的铸件铸件精度和质量都比较高，而且比较经济。不喜欢复制答案，楼主觉得我回答清楚了么？