查询词典 prevents

A shear-type safety bolt retains the motor head and prevents case bursting failure in the event of excessive pressure buildup in the motor.

剪切型的安全螺栓保留汽车头部和防止爆破失败的案例，在发生过度的压力，在建设汽车。

The weed-killer, prevents and kills off dike and dam , airport , road etc. must plow land , paddy rice , rape etc.

项目介绍（简介、技术特点、应用范围、市场前景、效益分析及对投资者要求。500字以内

The woven geotextile's separation action prevents the mixing of dissimilar soils allowing each soil layer in the road structure to function as intended.

编织土工布的分离功能阻止不通过土壤的混合让每层土壤在道路建设中发挥应有的作用。

This special heat-treatment ensures full bearing performance and prevents the set screws from loosening during operation as the set screws can be tightened hard enough without causing broken inner ring set screw hole.

内圈螺钉孔周围经局部高温回火后，轴承获得更好的性能，可防止螺钉在轴承工作期间松脱，同时螺钉拧得紧也不会导致内圈爆裂。

A team at the Harvard School of Public Health could not find any studies showing whether the time-consuming process of X-raying carry-on luggage prevents hijackings or attacks.They also found no evidence to suggest that making passengers take off their shoes and confiscating small items prevented any incidents.

研究人员称，目前没有看到有研究表明，对旅客行李费时的X光检查避免了劫机或恐怖袭击行为，让旅客脱鞋并没收小件物品也没有避免意外事故。

A team at the Harvard School of Public Health could not find anystudies showing whether the time-consuming process of X-raying carry-onluggage prevents hijackings or attacks.They also found no evidence tosuggest that making passengers take off their shoes and confiscatingsmall items prevented any incidents.

研究人员称，目前没有看到有研究表明，对旅客行李费时的X光检查避免了劫机或恐怖袭击行为，让旅客脱鞋并没收小件物品也没有避免意外事故。

Del Potro's right leg kicks back and prevents him from losing his balance.

德尔波托罗的右腿后蹬以防止身体失衡。

Your fear prevents you from facing it,And yet not facing it is theyour fear.

恐惧使你不敢面对它；而不能面对它，正是你的恐惧的来源。

Noise disturbs our sleep, prevents people from enjoying their time off work and too often leads to altercations when the police are called in.

噪音不但干扰大家的睡眠，使人们不能好好地享受下班后的时间，而且警察被叫来时还常常引起纠纷。

Business card printing and membership card when making half-way down the block, clean it with Gum Arabic, gum in the water after evaporation of the glue dry, not only reduces the printing plate blanks of surface free energy, and cut off from the metal surface and air of contacts, prevents the moist air carbon dioxide and a printing plate blanks react.

制卡和会员卡制作洋途转机时，给给印版擦拭阿拉伯胶液，胶液洋的火不合蒸不收后潮固的胶层，不仅降矮了印版不满缺局部的暗地纪律能，而且隔断了金属暗地和氛围的隔断，避免了湿润氛围洋的二氧化碳与印版不满缺局部爆不收不正答。

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。