vacuum extraction

If absolutely necessary, I would prefer the use of vacuum extraction rather than forceps.

如果必须要采用外力帮助，我希望不用产钳而是用胎头吸引术。

Investigate application of simple and double leaf forceps and vacuum extraction in cesarean delivery

探讨单叶产钳、双叶产钳和胎头吸引术在剖宫产中的应用吸收，吸取吸收的动作

According to the frequently used methods of extraction and isolation of natural products from organic body, the freeze-dried ascidian tunica was exhaustively extracted with 100% chloroform then the combined extracts were filtered and the solvent was separately concentrated under vacuum to yield a dark-brown gum.

按照目前比较常用的天然产物的提取分离办法，将样品冷冻干燥后，用100%氯仿浸泡，收集氯仿滤液，减压蒸馏浓缩去除浸提溶剂，得到黑褐色的浸膏状物质。

Some measures to improve extraction ratio of combustible vacuum tower were introduced in this paper, which included the renovation on the traditional practice of wet vacuum distillation, the reduction of the pressure drop of the tower, the stablization and improvement of the vacuity.

本文讨论了通过改变传统的湿式减压蒸馏操作、降低塔的压力降、稳定和提高真空度等提高燃料型减压塔拔出率的措施。

Results Fetal hypoxia, birth injury, premature, postmature pregnancy, huge baby, difficult vacuum extraction, forceps operation and breech extraction were the most dangerous elements of intracranial haemorrhage of newborn.

结果：新生儿颅内出血与胎儿缺氧及（或）产伤有关，早产、过期妊娠、巨大儿、困难的胎吸、产钳术、臀位助产术是颅内出血的高危因素。

Main equipment: Supercritical fluid extraction tanker, condensing tanker, centrifugal machine, speed mill, vacuum pump, HPLC, spectrophotometer.

主要设备: 超临界、萃取罐 、 浓缩罐 、 离心机 、 粉碎机 、 真空泵 、 高压液相色谱仅 、 分光光度计等.

Processing for Vacuum Extraction of Allicin with Ethyl Alcohol

大蒜素液真空酒精提取工艺研究

Comparison of Mother and Fetus in Low Forceps and Vacuum Extraction

低位产钳术和胎头吸引的母婴结果比较

Carrying twins increases prematurity risk by 40 percent, odds that worsen with triplets or more. Investigate application of simple and double leaf forceps and vacuum extraction in cesarean delivery

双胞胎早产的危险性会是一般的百分之四，更别说是三胞胎或者更多胎了。探讨单叶产钳、双叶产钳和胎头吸引术在剖宫产中的应用

Results Compared with natural delivery, in presence of assisted breech delivery, breech extraction, application of vacuum extractor, and cesarean section, the incidence rate of neonatal asphyxia increased significantly ( P < 0.01).

结果①臀位助产、臀位牵引、胎头吸引术、剖宫产术的新生儿窒息率经统计学处理明显高于自然分娩率（P<0.01）；