The being pregnant initial period responded that generally will continue about 3 months, some person early pregnancy reaction time comparison will be long, will only then vanish until 16-18 weeks.
怀孕初期反应一般会持续3个月左右，有的人早孕反应时间比较长，直到16 - 18周才消失。
The result shows that the complex inhibitor of SPJ701 and HQ which has long polymerization reaction induction period, is better than HQ on inhibition efficiency.
实验结果表明，复合阻聚剂SPJ701 - HQ阻聚效果较好，聚合反应的诱导期长，说明氮氧自由基与HQ有协同效应。
Because batteries utillize a chemical reaction, battery performance over time even if stored for a long period of time without being used.
由于电池是利用化学反应的原理，所以随时间的增加电池的性能会降低，即使是存放很长一段时间而不使用。
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