Delivery by vacuum extraction

'by... ... delivery by vacuum extraction 真空吸引器分娩 coating screen by vacuum evaporation 真空蒸发涂屏 ...

...奴鲁伊扎娣。她指出，奴鲁伊扎娣生产过程出现困难，医务人员采用真空牵引分娩方式（Delivery by vacuum extraction）， …

... Delivery by double application of forceps [医]双重应用产钳分娩 Delivery by vacuum extraction [医]真空牵引分娩 ...