necking down

基本解释

Considering the probably"necking down"caused by the impact of looper when they get contact, "soft touch"control is given;
针对活套起套速度设定不当可能引起带钢“颈缩”现象，提出了活套“软接触”解决方案；
Meanwhile the author has presented its own ideal of material budget for necking down forming method as well as the precautions.
对缩口成型法的算料和注意事项提出了自己的看法。
If this arc voltage saltation information can be extracted, we will get the characteristic information of necking down formation.
若能从电弧电压信号中提取出拐点发生时突变的信息，则可望提取到缩颈发生的特征信息。

We had clear enough evidence about a month and a half ago that allowed us to start necking down to the point we were able to prosecute the action last night against that safe house.
NPR: Attack on Zarqawi Followed Weeks of Waiting