Slotted raised countersunk head screws with waisted shank GB/T949-1988开槽半沉头不脱出螺钉
Optional Shapes: Circular, doughnut, waisted, elliptic and square, etc. 网片形状:圆形、环形、腰形、椭圆形、方形等。
Connections with waisted stud& Studs GB/T13807.2-1992腰状杆螺柱连接副螺柱
Tubes and pipes of the foregoing cross-sections may be polished, coated, bent, threaded, drilled, waisted, expanded, cone-shaped or fitted with flanges, collars or rings. 上述截面的管子可经抛光、涂层、弯曲、攻丝、钻孔、缩腰、胀口、成锥形或装法兰、颈圈或套环。
A trough is a long, open box for animals to feed or drink from. Slotted raised countersunk head screws with waisted shank 饲养槽是给动物喂食喂水的敞口长槽。GB/T949-1988开槽半沉头不脱出螺钉
An axis curve method is raised by talcing cylinder and waisted circular riser for example, and any proportional dimension of riser can be determined by axis curve network chart according to the known riser modulus. 以圆柱和腰圆形冒口为例,提出了坐标曲线网络图方法,根据巳知的冒口模数,由坐标曲线网络图即可确定任一比例的冒口尺寸。