necking-down中文什么意思

颈缩

• necking:    n. 1.【建筑】柱颈,柱颈部花边装 ...
• down:     down3 n. 1.( ...
• necking down:    锻缩; 颈缩; 收缩; 缩口

例句与用法

1. Taking outlet tube fittings as an example , the multi drawing process have been specified , with proposal of the as necked - down , abnormal flatness of flange etc . stamping characteristics for such stampings during solutions to the problems in tooling adjustment , such as necked - down , abnormal flatness of flange etc
   摘要以出水管接头为例，说明了管接头类冲压件在多次拉深过程中的工艺特点，并提出了模具调试过程中拉深颈缩、法兰平面度超差等问题的解决措施。