PLC and transducer are the cell of systemic import, track PROFIBUS-DP constitute the control system of metallurgy stock crane.
PLC及变频器是该系统的重要组成单元，各单元之间通过现场总线PROFIBUS-DP组成冶金原料吊车的控制系统。
Open cell aluminum foams were prepared by traditional powder metallurgy process, with spherical carbamide particles as the space-holder.
以球形尿素颗粒为造孔剂，采用传统的粉末冶金工艺制备开孔泡沫铝并研究了其性能。
Open cell aluminum foams were prepared by traditional powder metallurgy process, with spherical carbamide particles as the space-holder. The properties of open cell aluminum foams were studied.
以球形尿素颗粒为造孔剂，采用传统的粉末冶金工艺制备开孔泡沫铝并研究了其性能。
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