automatic block for two-way traffic 双向自动闭塞
Two-way Communication block system 双信闭塞式
two-way randomized block 双向随机区组
two way randomized block 双向随机区组
I had writer's block every two days... it's so difficult because of the way I write.
我每隔两天就遇到‘写作障碍’…由于我写作的方式所以决定了写作很难。
Roughly around under the surface ECG identified two bypass, bypass atrial fibrillation by alternating two downstream, suggesting that AV conduction block in the right way there.
大致可根据体表心电图确定有左右两条旁路，经两条旁路快速房颤交替下传，提示传导阻滞在房室正道中存在。
Newton and Darwin, two of the greatest theoreticians, both set out ideas in this way, putting their heads on Nature's chopping block.
牛顿与达尔文这两位最伟大的理论家都是这样阐述他们的观点并将他们的头颅置于‘自然’的砧板上的。
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