Investigation of the small flange ' s service condition revealed that its inactivation usually resulted either from cracking in welding seam jointing it with barrel proper or from its surface deformation 摘要通过对小法兰使用现状的分析，得出小法兰的主要失效形式表现为它与筒体间的焊缝出现裂纹、小法兰盘面变形等现象。
They can also be installed in vertical or horizontal pipe runs with the stem other than vertical , but may require special construction depending on valve size , service conditions and materials 也可以安装在垂直管道或者阀杆不是垂直向上的水平管道上，但是根据阀门的通径大小、应用环境和材料的具体情况，可能要求特殊的结构。
Under certain service conditions or when valves are equipped with cylinders or electric motor actuators , there may be a cost advantage in designing and installing the valves with flow over the disc 在某种应用条件下，或者当阀门配置气动执行机构或电动执行机构时，在安装阀门时使得流进的流体位于阀瓣上方可能具有成本较低的优点。
They can also be installed in vertical or horizontal pipe runs with the valve stem other than vertical , but special construction may be required depending on valve size , service conditions and material 闸阀也可以安装在垂直或水平管道上，其阀杆并不是垂直向上，但是此时要求具有特殊的结构，取决于阀门通径、应用条件和材料等因素。
Equipment used in oxygen service must meet stringent cleaning requirements and systems must be constructed of materials that have high ignition temperatures and that are non reactive with oxygen under the service conditions 氧气设施中使用的设备必须满足严格的清洁要求；系统必须采用具有高点火温度且在使用条件下同氧不反应的材料建造。
The fourth chapter analyzed the the constitution about outdoor space , crosswise compared outdoor spaces of several communities , analyzes people ' s activity in outdoor space , different spatial place service condition of space place 第四章分析外部空间的构成,横向比较上海几个居住区的户外空间,分析了人们在外部空间中的活动,不同空间场所的使用情况。
Superior thermal and chemical properties brings to parts made of technyl the ability to face those critical service conditions . some technyl grades have been specially developed to have excellent resistance to oils and grease 优越的耐热及耐化学性使得用泰克尼生产的零部件足以克服恶劣的使用环境，一些专门开发的泰克尼产品还具有优异的耐油性和耐磨性能。
The service condition of diesel injector nozzle is introduced , the failure reasons of diesel injector nozzle are mainly analyzed , the quality of diesel injector nozzle is improved and the useful life way of diesel injector nozzle is extended 摘要介绍了喷油嘴偶件的服役条件，分析了喷油嘴偶件失效的原因，对提高喷油嘴偶件质量和延长喷油嘴偶件使用寿命的途径进行了探讨。
Through the analysis of the service condition , property requirement , alloy element and cost performance of wear resistant material used for lining board of hadifield - steel cone crusher , the several kinds of lining boards with different chemical composition were designed 摘要通过对圆锥破碎机衬板用耐磨材料的使用工况、性能要求、合金元素及耐磨材料性价的分析，设计了不同化学成分的改性高锰钢衬板。
Article 20 the employing units shall guarantee the normal service conditions of the safeguards against occupational health hazards , emergency and first - aid facilities , and communication and alarm facilities , and shall not dismantle them or stop the use of them without authorization 第二十条用人单位应当确保职业中毒危害防护设备、应急救援设施、通讯报警装置处于正常适用状态，不得擅自拆除或者停止运行。
