The mass transfer effect of MA when using absorption solution is better than using vacuum-pumping and sweep gas .
一般采用吸收式膜吸收法的传质效果要优于减压式和吹扫式膜吸收法的传质效果。
2
A new testing method of vacuum-pumping for bulkiness property of three-dimensional crimp polyester staple fibers was introduced.
介绍了一种新的测试三维卷曲涤纶短纤维的膨松性能的方法——抽真空法。
3
Based on vacuumpumping accompanied with throttling process, presenting several superfluid helium cooling cycles and analyzing their flow principle and cooling characteristic.