线程2被线程1预占。
线程1被线程2预占。
线程1进入if代码块，但在执行 //2 处的代码行时被线程 2 预占。
Thread 1 enters the if block, but is preempted by thread 2 before executing the line at //2.
准均质充量压缩点火燃烧(QHCCI)方式占总燃料多数的预混合燃料以稀薄燃烧完成，故可能有很低的排放，尤其是碳烟和氮氧化物。
Quasi homogeneous charge compression ignition (QHCCI) combustion may be with low emissions, especially for soot and NO_X, according as the most fuel which is pre-mixed is lean burnt.
心气虚、肾气虚、肝肾阴虚3型的最大通气量实占预均较正常人明显降低。
The RREV of maximal ventilatory volume in all the 3 types remarkably reduced.
根据成本占比对每期预控、核算成本进行跟踪及其分析汇总反馈；
According to the cost accounting of each control counter, to review and do the cost tracking and make summary analysis then feedback;
根据成本占比对每期预控、核算成本进行跟踪及其分析汇总反馈；
According to the cost accounting of each control counter, to review and do the cost tracking and make summary analysis then feedback;
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