凸面

• Lens - fronted tubing
  凸面玻管
• Standard test method for measuring edge taper and crown of flat - rolled electrical steel coils
  扁轧电工钢卷板边缘锥度和凸面测量的标准试验方法
• End connections ? choice of raised face smooth finish or ring type joint for piping flexibility
  连接端口-根据管道特点选择凸面光滑表面或环连接端口。
• Flanges for 150 # filters are sorf type , for class 300 # , 600 # and 900 # will be wnrf
  过滤器的法兰凸缘为套焊凸面型， 300 # ， 600 #与900 #将是对焊长颈凸面型。
• The award took the shape of an eight pointed convex cross with a mobile swastika in the center disk
  勋章采用了指向八个方向的凸面十字并有一个万字于中心。
• 1890s by the 1890s , the bulger club with much shorter and wider heads replaced the long nosed clubs
  年代，杆头短而宽的凸面木质球杆替代了传统的长鼻球杆。
• Standard practice for estimation of heat savings by adding thermal insulation to bare valves and flanges
  通过给凸面阀门及法兰增加热绝缘材料评估蓄热量的标准实施规程
• When used with a “ raised face ” flange , there will be a gap between the faces on the outer flange diameters
  如果使用“凸面”法兰，则在外法兰直径表面之间将会有间隙。
• This is the earliest pinhole image formation experiment and the earliest cognition of rectilinear propagation
  八条中的后三条叙述了反射（平面、凹面、凸面）镜成像现象。
• Cavities are specific electromagnetic structures , and their scatterings are different from convex objects
  凹形腔体是一类特殊的电磁散射结构,其电磁散射特性不同于一般的凸面体。