vacuum extractor for artificial abortion

my friend's ob used a vacuum extractor to help deliver her baby. is that the same as forceps?

我的朋友在生产时用到了真空吸引，这和产钳一样吗？

the vacuum extractor is a plastic cup placed on the baby's head, and it uses gentle suction to help guide him or her out of the birth canal.

真空吸引是用一个塑料杯放在婴儿的头顶，并使用柔和的吸力把婴儿拉出来。

pathogens for the control of pests

防治虫害的病菌

it is since the industrial revolution, industry has been being fundamental power of advancement. of a country even the society.

工业乃是一个国家乃至却社会进步的根本动力，从工业革命以来更是如此。

our fundamental power will not be much different.

我们的根本国力不会发生太大的改变。

a teacher, the direct organizer and executor in education, is the most fundamental power and guarantee.

教师是教育活动直接的组织者和实施者，是教育最基本的力量和保证。

reform and opening is the fundamental power of chinese social revolution.

中国社会之巨变，根本的动力在于改革开放。

practice embodies the fundamental power, people who practice the industry to promote industry development is the fundamental power.

实践体现人的根本力量，人的产业实践是推动产业发展的根本力量。

the backbone of the backbone, is the basic orientation of the power lever is the wrong direction against the fundamental power base.

这些中坚的骨干力量，是杠杆的基本导向力量，也是反对错误方向的基本力量基础。

the fundamental power to promote the increasing development for a country is to own innovative talents.

对一个国家来说，其发展壮大不竭的根本动力关键在于拥有创新型人才。

nonexistence of the stable quasi-harmonic map

稳定拟调和映照的不存在性

regularity for weakly stationary solutions to inhomogeneous p-harmonic map equations

非齐次p-调和映射方程组弱驻点解的正则性

harmonic method for lettering on surface

实现曲面刻字的调和方法

second harmonic method of measurement of rebar corrosion in non-linear case

非线性情况下钢筋锈蚀测量的二次谐波方法

a multi-harmonic method for studying effects of mistuning on resonant features of bladed disks with dry friction damping

多谐波法研究带有叶间干摩擦阻尼失谐叶盘系统的共振特性

application of non-sinusoidal oscillation technology of slab cc mould

板坯连铸结晶器非正弦振动技术的应用

a non-sinusoidal oscillation waveform for continuous casting mould

一种连铸结晶器非正弦振动波形

non-sinusoidal oscillation system of electro-hydraulic continuous casting mold

电液连铸结晶器非正弦振动系统

the construction and limit of oscillation parameters on non-sinusoidal oscillation of mold

结晶器非正弦振动参数的构建及取值限度

determination of non-sinusoidal oscillation amplitude for casting mold

连铸结晶器非正弦振动振幅的确定