The counterweight iron classifies generally according to the modelling method, in the custom divides into the ordinary sand mold counterweight iron and the special counterweight iron.
配重铁一般按造型方法来分类，习惯上分为普通砂型配重铁和特种配重铁。
The dynamic optimization method of determining the counterweight and its center of portal crane is put forward.
提出了确定门机对重质量及其位置的动态优化法。
In order to improve the counterbalance effect of pumping units, this paper represents a method of installation with forward offset counterweight.
为了改善抽油机的平衡调节，本文提出了平衡重前置的安装方式。
In order to improve the counterbalance effect of pumping units, this paper represents a method of installation with forward offset counterweight.
为了改善抽油机的平衡调节，本文提出了平衡重前置的安装方式。
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