... active field period 有效场周期 Early active period 活跃期早期 monsoon active period 季风活跃期 ...
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Conclusion Cutting stump of umbilical cord of newborn during the early period is a active and positive nursing method, and it can reduce the umbilical infection in newborn.
结论新生儿脐带早期修剪，是一种主动、积极的护理方法，减少了新生儿脐部感染。
Conclusion There is the change of nervures system during early period of Fluoride. It is an active significant that measuring the ca metabolite can make an early diagnosis...
结论氟中毒初期就有神经系统改变，尿中儿茶酚胺酸性代谢物的测定对氟骨症早期诊断及治疗有积极的意义。
The activity of Na2SO4 can improve the performance of low-active flyash, such as improving the early strength, reducing cracks, shorting construction period and ensuring the construction quality.
用硫酸钠添加剂的方法改善低活性粉煤灰，可以提高二灰碎石的早期强度、减少裂缝、缩短施工周期，并保证施工质量。
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