Aerospace series - pipe coupling 37 , spherical , in heat resisting steel - straight nipples , welded end - inch series 航空航天系列.耐热钢制球面37 ?管联接器.端部焊接的直管接头.英制
Fixed railway installations . compact ducting in reinforced concrete for electric traction cables . covers for straight units 铁路固定装置.电气牵引电缆用嵌入钢筋混凝土中的密排导管.直管装置盖
Main products : u - series , l - straight series , r - circular series , ft - series and trigger coil , etc 主要产品： u -型系列、 l -型直管系列、 r -型环形系列、 ft -型异形系列闪光灯管，以及配套的触发线圈等电子产品。
Yuan bao shan power plant is one of the major power plants in the northeastern electrical network of china 元宝山发电厂是国家电力公司东北分公司直管的东北电网骨干火力发电厂，机组单机容量较大，自动化水平较高。
Full - bore : full - bore straight - through type with connection between valve and pipeline or straight pipe , equal sectional area and " 0 " loss of flow 全通径：全通径直通式，阀门与管道或直管连接相通，截面积相等，流量损失为“ 0 ” 。
Suction piping for all pumps shall have at least five ( 5 ) times the nominal pump suction flange diameter of straight pipe upstream of the suction nozzle 所有泵的吸入管线应在吸嘴端上游具有至少( 5 )倍公称泵吸入直管法兰直径的长度。
Teflon - lined pipe , casing , elbow , the three exchanges or four , size head , cylinder , air compressor - oxygen - ring , gasket seal ring and auto parts 聚四氟乙烯内衬直管，套管，弯头，三通，四通，大小头，筒体，空压机-制氧机-活塞环、密封圈和汽配封圈。
A new experiment device and method are used to measure local and straight pipe resistance , date collection and processing method are introduced , reasons for local resistance are analyzed , measuring and calculation methods are discussed 摘要采用1种新的局部与直管阻力测定的实验装置和方法，介绍了数据的采集和处理方法，分析了局部阻力产生的原因，讨论了测量计算方法。
The geometrical relation of elliptic imaging is studied for welding seam image of the butt welds in straight tubes . the region model of welding seam image is proposed , it furnishes a evidence theory to further process to welding seam image 哈尔滨工程大学博士学位论文一针对具体的钢管直管对接焊缝图象，研究了其椭圆成象的几何关系，提出了焊缝图象区域模型，为进一步处理焊缝图象提供了理论依据。
The wavy wall tube evaporator is a novel falling film evaporator which is improved on the vertical tube falling film evaporator , the main difference between them is using a wavy wall tube heating element to replace the vertical tube heating element 波形管降膜蒸发器是在直管式降膜蒸发器的基础上发展起来的一种新式降膜蒸发器，与直管式降膜蒸发器的最大不同之处在于采用波形管加热元件替代传统的直管加热元件。
