这些构造部位的频繁伸缩使应力集中，导致微裂纹的产生。
Constant flexing of the structure concentrates stress, which leads to microscopic cracks.
首次发现在引发剂量增加而导致微球粒径增加时，在增加的趋势中存在“临界点”；③。
Secondly, A critical point was found during the particle size increasing with increasing initiator concentration for the first time.
自流灌区的自然低水头微灌技术，既节水又节能，但因自然水头低导致微灌系统灌溉均匀性差。
The technology of natural low-head irrigation has the advantage of water-saving and energy-saving, but its uniformity is poor for the low pressure.
应用推荐