bellows

Due to the fact that it is not permissible to assemble new D-axle plain bearing wheelsets,and such problems as wear and depot repair,the original standard type rubber dust guard can not meet the sealing requirements.

由于不允许新的 D 轴滑动轮对的组装,再加上磨耗、段修等问题,原来标准型的橡胶防尘板满足不了密封要求。

The work designed and manufactured a removable dustproof cover for the iron branch channel that can prevent dust diffusing.

设计制作了一种可单人移动的防尘罩,拨闸时可起到明显的防烟尘作用。

The promulgation and implementation of GB2626-2006 "respirator protective equipment-Non-powered air-purifying particle respirator" marks that Chinese labor protective equipment steps on a new level and the corresponding testing equipment need to be upgraded.

文中主要介绍目前国内外几种防尘面罩粒子阻隔效率测定装置,系统介绍了各检测装置的测试原理及测试程序,为国内相关检测机构在防尘面罩粒子阻隔效率测试仪器的选择上提供一定的帮助。

In GB2626-2006 "respirator protective equipment-Non-powered air-purifying particle respirator",the filter efficiency test of respirator is a pivotal index for capability evaluation.

在GB2626-2006《呼吸防护用品——自吸过滤式防颗粒物呼吸器》中防尘面罩粒子阻隔效率测定是一项评价防尘面罩性能的关键指标。

Nonlinear finite element analysis of rubber dust cap

汽车传动轴防尘罩的非线性有限元分析

filter for dust respirators

防尘口罩用过滤材料

single-use dust mask

只用一次的防尘面罩

A smock worn to protect one's clothing from dust.

防尘衣一种防尘保护衣服的罩衫

Selection of Dust Exhaust Hood and Its Application to Dust Prevention of Jade Carving Workplace

吸尘罩的优选及其在玉石雕刻防尘中的应用

General technical requirements for self-inhalation filtertype dust respirator.

自吸过滤式防尘口罩通用技术条件.

Safety requirement: Hardhats, Safety Glasses, Dust Mask, Face Shield, Ear Muff, and etc.

必须佩戴下列个人防护用品：安全帽、安全眼镜、面罩、防尘面罩、护耳器等.

mask for protection from dust odors etc., of textile materials (excl. masks with replaceable filters)

口罩,用于防尘或气味等用,纺织材料制（不包括有可更换滤层的）

Measurement and Analysis of Nozzle Flow in Respirator Leakage Tester Based on FLUENT

基于FLUENT的防尘口罩泄漏性试验装置喷头流量检测分析

The PMMA transparent cover provides perfect light passing and protects dust. The unique stainless steel hinge create easy and convenient opening.

PMMA灯罩防尘、光性能良好。独特的活叶式设计，不锈钢扣。开启更方便、安全。

This paper introduces how to improve injection die of dustprooflampshade, its main structure, work principle, and relative dimension calculation of ejection device.

介绍了对原有防尘灯罩注射模具的改进与其主要结构、作原理和顶出机构的有关尺寸计算。

Be smothered with [in] dust By passing cars

被汽车驶过时扬起的尘土所笼罩

The cover protects the machine from dust.

这个罩保护机器使灰尘落不到上面。

positive pressured, powered dust hood and blouse

气体供应式滤尘头罩及上衣

Darkness settled over the fields. Dust settled in the road.

黑暗笼罩田野。灰尘飘落在路上

A protective covering for the face or head.

罩，防护罩用于脸或头的保护性覆盖物

blimp (casing) for cinematographic projectors

电影放映机防声罩（箱）

blimp (casings) for cinematographic cameras

电影摄影机用防声罩（箱）