double roller chain coupling 滚子链联轴器 ; 双辊链式联轴节
double chain conveyor 双链刮板输送机 ; 双链运输机 ; 倍速链输送机 ; 双链刮板运送机
double chain complex [数] 双链复形
double chain condition [数] 双链条件 ; 双键条件
double-chain conveyer 推杆悬链 ; 悬挂运输链
double hook chain 双钩吊链
double chain 角闪石 ; 路线里程差 ; 双链型
double chain structure 复链状构造
The result was a textbook example of double marginalisation-when a chain of independent monopolists charges more, but receives less overall than a single monopoly.
结果是一个范例双重边缘化——当一连锁无党派独占者收费多，但获得总体收入少于单一的垄断。
In global production chains, countries face a double challenge of maintaining an efficient chain not just for exports but also for imported inputs and components.
在全球生产链中，各国面临双重挑战，即不仅要为出口物资和零部件，也要为进口物资和零部件保持一个高效的生产链。
The rusty iron chain that double-locked the cart to the front wheels of the cycle began to squeal as he rode.
三轮车前面轮胎上双重锁上的铁链生了锈，在骑动的时候发出刺耳的声音。
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