two-by-twice的意思|示意

Normal thickener needs a large place to fix it, and the machine's efficiency will be very low when it deals with the two-by-twice material.

针对普通浓密机占地面积大、处理微细物料效率低的实际情况，应用现代脱水工艺技术和液固分离新方法，有针对性地开展高效浓密机的研究。

Spurred on by funding policies, half of the European research articles had international co-authors in 2007, this is more than twice the level of two decades ago.

在资助政策的推动下，2007年有一半的欧洲研究论文有国际合作作者，这是20年前水平的两倍多。

Each person took the test twice over two days and beforehand received either an injection of ghrelin, a hunger hormone that is released by the stomach, or a shot of saline as a control.

每个人两天里做的测试是多过两次的，并且这些人在参加测试之前都会注射一种胃饥饿素(从胃里释放出的一种饥饿激素)，或者是盐水。