direct-current main

基本解释

As the current main way of the international direct investment, cross-border merger and acquisition played an important role in the global economic restructuring.
跨国并购作为当前对外直接投资的主要形式，在这次全球性的经济结构调整中扮演了重要的角色。
PPTA (polyphenylene terephthalamide) pulp was prepared by semi-continuous direct polycondensation using a co-current rotating and meshing twin screw extruder as main reactor.
以同向啮合旋转的双螺杆挤出机作为主反应器，采用半连续化直接缩聚法制备了PPTA浆粕。
Coal mine hoisting control system is made up of multifunction digital depth system, master control system, all-digital system of direct current timing, main computer system and signal system.
矿井提升机计算机控制系统主要由以下五部分组成：多功能数字深度指示系统、主控制系统、全数字直流调速系统、上位机管理系统和信号系统；