查询词典 vacuum sweeper

First the concept and classification of Roots vacuum pumps: 1 concepts: Roots vacuum pump is a rotary vacuum pumps.

一、罗茨真空泵的概念和分类： 1、概念：罗茨真空泵是一种旋转式容积真空泵。

Presently there exists no convenient method to determine the baking temperaiure for glass vacuum chamber which uciuall plays an important role in the acement of required vacuum circumstance in high-vacuum system made of glass,In this paper approximate method was represented to calculate the baking temperature of glass surface by the emissivities of appropiate materinl surface,determining the baking temperature difficult to be tested by the relation ship recommanded by the paper and the indication of an ausa...

在高真空系统中，真空室的烘烤温度对获得要求的真空氛围有着重要的影响，对于玻璃制作的真空系统，目前对于该温度的确定缺少一种较为简单易行的方法，本文基于辐射换热分析提出了具有通用性的利用材料表面辐射率来计算玻璃表面烘烤温度的近似方法，将这难以直接测量的温度通过附设热电偶的示值和本文推荐的关系式来确定，于实际情况相比较为吻合。

First, we deduce a formula for vacuum polarization pressure as f ＝ G m M （ r ∕ r ＋ v ∕ c ）∕ r 2 , based on the isotropy of distribution of neutrinos ν0 in the lowest energy state in the physical vacuum, requested by the Pauli exclusion principle. Then, we deduced the metric equation of the general relativity and the equivalence principle according to this formula. Further, we demonstrate that this vacuum polarization pressure is the gravitation in general meaning.

首先从泡利不相容原理要求的在物理真空中最低能态中微子ν0分布的均匀各向同性出发，推导出真空极化压力公式 f ＝ G m M （ r ∕ r ＋ v ∕ c ）∕ r 2 ，然后由此公式推导出广义相对论的度规方程和等效原理，并论证此弱作用力的真空极化压力就是通常意义下的引力。

Usage: Use a capful to 20-40 with water, and then clean the surface with the scrubber or auto-sweeper.

使用方法：将该产品一份加水二十份或四十份，用刷机或自动洗地机清洗。

Awards were given out included Schools Specialachievement awards, the Sweeper Zone awards, Kickz, Goals for Girls,Reading 4 Families, the Jack Carley award for amazing courage andRespect 4 All award, dedicated to the memory of Nathan Escoffery.

奖项还有颁发给校园特别贡献奖，清洁工奖，秀女奖、雷丁家庭、勇气奖和用于纪念安南-艾斯霍菲利尊老爱幼奖。

Awards were given out included Schools Special achievement awards, the Sweeper Zone awards, Kickz, Goals for Girls, Reading 4 Families, the Jack Carley award for amazing courage and Respect 4 All award, dedicated to the memory of Nathan Escoffery.

奖项还有颁发给校园特别贡献奖，清洁工奖，秀女奖、雷丁家庭、勇气奖和用于纪念安南-艾斯霍菲利尊老爱幼奖。

I want to buy a carpet sweeper .

我想买一台地毯清扫器。

Our global customers to provide manual carpet sweeper .

我们向全球客户提供手动地毯清扫器。

Manual carpet sweeper L2110358 123 - manual carpet sweepers , L2110358 price, manual carpet ...

手动地毯清扫器L2110358 123—手动地毯清扫器L2110358 价格、手动地毯。。。

The main cleaning mechanism is basically a Bissell carpet sweeper—one of those rug cleaners that is often found in college dorm rooms.

主要的吸尘机制基本上是「比斯尔扫毯器」，它是大学宿舍最常见的扫毯器之一。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。