查询词典 protective measures

In pace with environmental labefaction,as well as the huge influence of environmental problem ,people's protective consciousness enhance incessant,and establish a series of measures to control environmental pollution,in which the system of environmental impact assessment develops particular effect gradually.

随着环境的恶化以及环境问题所带来的巨大影响，人们的环境保护意识不断增强，各国制定出一系列控制环境污染的办法，其中环境影响评价制度逐渐发挥其独特的作用。

OBJECTIVE To investigate the medical dustmen′s self-protective situation and put forward reasonable advice and measures.

目的 了解目前医院保洁人员自我防护现状，提出合理化的建议和措施。

But in practical operating, overvoltage caused by reignition of the vacuum switching device frequently appears, and it result in damage of the capacitor bank or the switchgear itself. Ensuring the switchgear against reignition and installing a protective device are two main approaches to avoid the phenomenon. In this paper, a study on overvoltage caused by reignition due to capacitor bank switching with the vacuum switching device and its preventive measures are carried out. The main work which has been done and researches are as follows: 1. The producing mechanism of overvoltage and its influence factor are analyzed. It is pointed out that single-phase reignition is the main reason for damage of the switchgear and two-phase reignition is the main reason for damage of the capacitor bank,so overvoltage of single-phase reignition and two-phase reignition are the emphases of prevention. 2. Analysis of the special working condition of the operating switch for capacitor bank is carried out. It indicates that the vacuum switching device is difficult to realize no-reignition under this operation condition, so it is more practical to adopt protection devices. 3. Analyses of protection effect of RC and MOA and their shortages are carried out. It shows that the two methods can only restrain effectively overvoltage caused by single-phase reignition, and they cannot protect the capacitor bank when reignition of two-phase occurs. 4. The operation principle of G-R damping device is analyzed and discussed emphatically.

本文针对真空开关投切电容器组时因重燃而产生的过电压及其防治措施进行了研究，所开展的主要工作和研究结果如下： 1、对过电压的产生机理及其影响因素进行了分析，指出单相重燃是导致开关设备损坏的主要原因，而两相重燃则是导致电容器组损坏的主要原因，因此单相重燃和两相重燃过电压是防护的重点； 2、对电容器组操作开关的特殊运行条件进行了分析，指出在这种运行条件真空开关难于实现不重燃，因此采用保护装置更具有现实意义； 3、对RC与MOA的保护效果和存在的不足进行了分析，指出这两种方法均只能有效抑制单相重燃过电压，而不能在发生两相重燃时保护电容器组； 4、重点对G-R阻尼装置的工作原理进行了分析和讨论，指出该装置接入后线路中将会出现两种频率的高频振荡，而电容器组上的过电压是由这两种振荡共同决定的； 5、根据对上述两种振荡的分析指出存在一个最佳电阻值使得过电压最低，并提出了电容器组电压和最佳电阻值的近似求解方法； 6、使用电气暂态分析软件MATLAB对G-R装置的保护效果进行了仿真计算，证实该装置确实可以有效抑制重燃时的电容器组过电压； 7、根据仿真与近似计算结果的偏差提出了近似计算的修正方法，经过修正后的过电压计算结果与仿真结果吻合较好； 8、对G-R装置中放电装置G与阻尼电阻R的要求进行了分析，指出采用编织电阻和真空间隙可能是最佳选择。

On how small "crime" issue, the "Notice" to emphasize two points : First, the "new areas", is the design phase or under construction projects, focusing on construction projects designed to strengthen the mandate of health-related articles and book health information audit including the residential area construction projects siting, health and sanitation facilities, as well as related design, construction drawings audit; food business, public places, schools relevant health information; across product materials, drinking water disinfection equipment health Ltd.; centralized water supply (including water-owned, two water) water quality test reports, water purification process design, Health protective belt design drawings and information; Sound of excreta disposal facilities, medical institutions, medical waste disposal and radiation protection measures and design information.

在对小区如何&预防&的问题上，《通知》强调两点：一是对&新小区&，正在设计阶段或正在施工的建设项目，重点加强对建设项目设计任务书中相关卫生专篇及卫生资料的审核，包括对住宅小区建设项目的选址、卫生设施以及与卫生相关的设计、施工图纸审核；食品经营、公共场所、学校相关卫生资料；涉水产品材料、饮用水消毒设备卫生批件；集中式供水水质检验报告、净水工艺设计、卫生防护带设计图纸及资料；粪便无害化处理设施、医疗机构医疗废弃物处理和射线防护措施设计图及资料等。

Sand, stone, earth and similar materials: If sand, stone, earth, garden-use turf, moss and other similar material are needed, a layer of leak-proof protective matter must be laid on the floor. The exhibitor must take all preventive measures to keep the above-mentioned materials from sticking to and staining any part of the exhibition hall.

沙石，泥土及类似材料：如果需要使用沙石，泥土，花园用泥炭，苔及其他类似材料，必须在地板上铺贴一层防漏保护物，参展单位必须保证采取了所有的预防措施以免使上述材料粘污展馆的任何部位。

Against the specific problems, this paper puts forward corresponding improvement measures including design of the convection field and temperature field, significantly the reduction of water tank evaporation surface, heat preservation of water tank by using block to fix outside protective layer.

针对具体问题提出了改进措施，包括对流场、温度场的重新设计，大幅度减少水箱蒸发面，水箱保温采用木块固定外保护层的方法。

Article 29 Whereas the selling prices of grain and other major farm produce are too low on the market, the government shall introduce protective prices and adopt corresponding measures to ensure the protective prices be put into effect.

第二十九条政府在粮食等重要农产品的市场购买价格过低时，可以在收购中实行保护价格，并采取相应的经济措施保证其实现。

Theoretically the pump blade failure mechanism was worn on, the impact of wear failure leaves the various factors was analyzed, combined with practice pumping station operation and maintenance experience, the focus at a reasonable selection, surface heat treatment, non-metallic protective coating alloy powder spray repair welding and welding six aspects, premature wear of the pump blade technical measures and repair methods was prevented in order to enhance its effective life.

理论上阐述了水泵叶片磨损失效的机制，具体分析了影响叶片磨损失效的各种因素，并结合泵站运行实践和维修经验，重点在合理选材、表面热处理、非金属涂层防护、合金粉末喷焊和补焊等6个方面，提出了防止水泵叶片过早磨损的技术措施和修补方法，以提高其有效的使用寿命。

The 120m3 BF foundation temperature is reduced from 950℃ to below 700℃ and the furnace life campaign is prolonged for more than 2 years by taking furnace maintenance measures such as batching schreyerite in burdens to deposit Tion hearth bottom to form a steady protective layer and make molten iron liquidity slower to slowdown the erosion on bottom, drilling holes to lay water-cooling pipes in heat resistant foundation to heighten the 1150℃ isothermal line of molten iron to make frozen metal layer thicker.

对济钢120m3高炉炉底侵蚀状况，在生产中配加钒钛矿，使其还原成Ti的沉积，以对炉底形成稳定保护层，降低铁水流动性，减缓铁水对炉底冲刷；同时在耐热基墩打孔，穿埋水冷管，促使炉缸铁水1150℃等温线上移，凝固团增厚。实践表明，特护期间炉基温度由950℃下降至700℃以下，炉役寿命延长2年以上。

Homosexual and bisexual men are susceptible of AIDS, and by anal intercourse is the main mode of transmission of the disease, in the absence of protective measures, the dissemination rate is about 1%.

男性同性恋及双性恋者是艾滋病的易感人群，而经肛门性交是本病的主要传播方式，在没有保护措施的情况下，传播率约为1%。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。