And dirty steel belt surface, impurity and Pb phase accumulation during alloy belt manufacture lead to worse adhesion between alloy layer and steel back.
而在合金带的生产过程中，钢带表面未清洗干净，存在杂质及铅相偏聚等，是导致合金层与钢背之间结合不良的主要因素。
Some children go through a phase of constantly slipping out of the child seat harness or seat belt, or releasing the buckle, during journeys.
有些孩子经过不断滑出的儿童座椅安全带或安全带，或释放扣，在旅途的一个阶段。
By simulation, draw the phase trajectory diagram and time response plans under different conditions, found out the acquisition belt relate to any initial phase error.
通过仿真，给出了不同条件下的相轨迹和时间响应图以及任意初始相差对应的捕获带。
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