The set takes Roots pump as its main pump and spinning vacuum pump as pre-stage pump.
本机组采用罗茨泵作为主泵，以旋片式真空泵作为前级泵。
In between, an electromagnetic vacuum inflation valve is installed in series, which opens and closes with the switch of the pre-stage pump.
在前级泵与主泵中间串联一个电磁真空充气阀，随前级泵开关而启闭。
In order to restrain harmonic pollution and improve power system quality, power factor correction (PFC) circuit is applied in pre-stage of power supply.
为了抑制谐波污染，改善电网品质，目前多在电源前级加入功率因数校正环节。
A language as flexible as Perl facilitates good coding in every stage of the software project, except the pre-coding stages (requirements gathering and architecture design).
象perl这样灵活的语言，使除预编码阶段(需求收集与体系结构设计)之外的任何软件项目阶段的优化编码易于进行。
The translator then USES an XLIFF-enabled CAT tool to add all the missing translations and to verify the ones provided at the pre-translation stage.
翻译人员使用支持XLIFF的CAT工具，把所有缺少的翻译添加上，并检查预翻译阶段提供的译文。
CD8+ cytotoxic T lymphocytes (CTL) play a critical role in eradicating Plasmodium falciparum at the pre-erythrocyte stage of the parasite infection.
杀伤性T淋巴细胞（CTL）是红细胞前期恶性疟原虫免疫防护的关键环节。
The report said detection(4) of sporting potential by examining the ratio between the index and ring fingers "could help identify talented individuals at a pre-competitive stage."
报告称，观察食指和无名指的比例“有利于在竞争前阶段挑选有天分的人。”
The young Norwegian made an instant impact, claiming two stage wins to hold the overnight lead after the opening day on the snow and ice of round one, despite a dearth of pre-event testing.
年轻的挪威人一直能给人带来惊喜，在第一站冰雪赛事的首日比赛中，缺乏赛前测试的他凭借两个赛段胜利在当天取得领先。
Virtual assembly is the key technology of virtual manufacture, virtual products can be pre-assembled at design stage of products, and the correctness of assembly process plans can be verified.
虚拟装配是虚拟制造的关键技术之一，可在产品设计阶段进行预装配，验证装配工艺的正确性。
In the second stage, a set of mathematical and custom functions based on pre-defined alarm conditions are used.
在第二阶段，采用了根据预设报警条件定义的一组数学函数和定制函数。
The research about incidence of CHD is still in its infancy stage in Beijing, it has been only limited to pre-school children.
北京市的先心病发病率的研究还处于刚刚起步阶段，以前的研究对象也仅仅限于学龄前儿童。
The pre-liberation Hunan gymnastics movement was still at the start stage, gymnastics mainly develops in the school scope;
解放前湖南体操运动尚处于起步阶段，体操主要在学校范围内开展；
In order to improve the accuracy rate of recognition of handwritten number, the researchers have done a lot of work at the pre-processing stage, feature extraction and classification stage.
为了提高手写数字的识别率，研究者在预处理阶段、特征提取和分类识别阶段都提出了很多方法。
Pre-control means the control of the project preparation stage, mid-control is the control of the construction process, after control means after the end of the project quality control.
事前控制是指对工程准备阶段的控制，事中控制是指对工程施工过程的控制，事后控制是指工程结束后质量的控制。
Oviductin was expressed to a great extent during pre-ovulation stage under the control of ovarian hormones.
输卵管蛋白的表达受卵巢激素的控制，主要在排卵前期大量表达。
Her idol is none other than Pavel Nedved, whose Czech Republic side were among the pre-tournament favourites at the 2006 FIFA World Cup Germany "only to fall at the group stage..."
她的偶像是帕维尔·内德·维德，他所在的捷克队也是在2006年德国世界杯前被看好，但是倒在了小组赛阶段。
Bargaining is very important; it is an inevitable stage in practical operations. Bargaining can improve the previous "contract" pre-allocation efficiency.
在现实生活中，谈判或者议价常常是不可避免的重要协商阶段，谈判可以提高先前“合同”的预分配效率。
The result showed that two-stage process was practical to pre-press particleboard mat then to hot-press in mold to produce tridimensional decorative particleboard .
结果表明：以刨花预压制坯再进行热压模压的两步法刨花模压工艺，制备具有立体结构的刨花模压装饰板材的技术路线是可行的。
Precalcining kiln system with 5-stage cyclone pre-heater and calciner is adopted for productive process in this project.
本工程采用带五级旋风预热预分解的新型干法回转窑生产工艺。
Endoscope and washer disinfector manufacturers should all give clear evidence based advice on these aspects relating to their washers and these should be provided at the pre-purchase stage.
内镜和清洗消毒器制造商应提供清晰的、以证据为基础的咨询，涉及其清洗器的有关知识，并且应该在采购之前就提供。
The relationship between the pre-splitting, vibration reduction, millisecond blasting and the maximum single detonating charge in open deep-hole large stage is introduced.
主要介绍露天深孔大梯段预裂爆破、减震爆破、微差爆破、最大一次装药量的控制措施和关系。
Vigilant assessment of the risks and benefits of medicines applies throughout the life cycle of a medicine - from the pre-approval stage to use by patients.
在药品的整个生命周期(自批准前阶段到病人使用)，都保持警惕，对药物存有的风险和带来的益处进行评估。
Under the new rules, the use of pre-recorded songs, music and other methods of substituting another performance for the one seen on stage have been prohibited.
根据新出台的《营业性演出管理条例实施细则》，使用预先录制好的歌曲、乐曲和用另外一场演出代替现场表演的做法都是被禁止的。
The question going forward, Christensen says, is which companies can move beyond their current pre-revenue stage and begin providing the kinds of returns on investment venture capital firms expect.
克里斯坦森认为，在将来一段时间，最重要的问题是，哪些公司能够迈出当前的“待产出”阶段，开始产出风投机构真正期盼的东西——投资收益。
Right now, about 60 million people in the United States have pre-diabetes - a stage of insulin resistance before full-blown diabetes.
奥布莱特说，目前，大约6000万美国人处于先糖尿病阶段——完全患上糖尿病前的胰岛素抵抗阶段。
The report said detection of sporting potential by examining the ratio between the index and ring fingers "could help identify talented individuals at a pre-competitive stage."
研究报告中说，通过研究食指和无名指之间的比例探测人的竞技潜力“可以及早发现（未过竞技年龄）竞技人才”。
It is a practical and important way to improve meat quality by different means at the stage of pre-slaughter and post-slaughter.
畜禽在宰前进行短期特殊饲养并改善驱赶、转运和运输的方法，可以大幅度降低宰前动物的应激反应，提高肉的品质；
It is a practical and important way to improve meat quality by different means at the stage of pre-slaughter and post-slaughter.
畜禽在宰前进行短期特殊饲养并改善驱赶、转运和运输的方法，可以大幅度降低宰前动物的应激反应，提高肉的品质；
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