半永久性的浮动栏油栅 semipermanent floating oil boom
分析了由位置控制器、直流传动装置和PLC组成的半浮芯棒连轧机组限动链控制系统的硬件配置及软件组成。
Hardware and software configuration of drive system with position controller, DC drive unit and PLC for a retainer of semi-floating mandrel mill are analysed.
结合福建泉州港肖厝港区码头工程实例，介绍应用半潜驳进行码头沉箱浮运安装的施工工艺。
Taking Fujian Quanzhou port Xiaocuo port Area wharf engineering as a case, this paper introduces the construction technology of caisson floating transportation and installation using submerged barges.
浮顶油罐火灾扑救的主要设施是固定、半固定泡沫灭火系统。
The main facilities to put out the fire in roof tanks are fixed and semifixed foam extinguishing system.
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