... stratification effect 分层效应 stratification ratio 成层比 rock stratification 岩层层理 ; 岩石层理 ...
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Schemes of variable compression ratio (VCR), variable exhaust gas recirculation (EGR), variable exhaust valve timing, and EGR with stratification by tumble charge flow are recommended.
推荐可变压缩比（VCR）方案、可变废气再循环率（EGR）方案、可变排气门关闭时刻方案，以及废气再循环滚流分层充气方案等。
Should the apolipoprotein B/A1 ratio become the routine lipid measurement for cardiovascular risk stratification?
是否载脂蛋白B/A1比值能作为常规脂质测量用来进行心血管危险分层？
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