A man with grey hair was (s)miling at him.

一个头发花白的男人正朝他微笑。

Study is made of the vibrating ball miling for ultra - fine WC powder preparation.

对振动球磨法制取超细碳化钨粉末进行了研究.

Study is made of the vibrating ball miling for ultra-fine WC powder preparation.

对振动球磨法制取超细碳化钨粉末进行了研究。

This machine applies to trimming, profiling copy, beveling and miling the hole of the half finish product of packing boxes.

本机适用于包装盒半成品的修边、仿形、倒角、铣孔。