Thin plastic parts fragile and difficult parting, a large plastic parts and corrugated-prone material accumulation.

薄壁塑件易碎，不易脱模，大面积塑件易发生波纹及物料聚积。

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The experiment study regulation of different consideration fe on growth and material accumulation of Dunaliella salina.

实验研究了不同浓度的铁对盐藻细胞生长与物质积累的调控作用。

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The results indicated that: the dry material accumulation quantity and filling duration under full irrigation were higher than that of drought condition;

结果表明：灌水处理条件下，不同品种干物质积累均较自然降水条件下干物质积累重有所提高，且不同程度的延长了灌浆持续时间；

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Most of his material is second-hand and the accumulation of detail, especially contemporary newspaper accounts, is sometimes exhausting.

ECONOMIST: Ronald Reagan

Amid all of this messy thinking we miss the simple truth behind our material wealth: It has been achieved through the accumulation, by us and inherited from our forefathers, of a stock of highly configured and embedded tools that make human effort more effective and things possible that never were before.

FORBES: The Role of Capital Has Politicians Confused

The third mistake was that, because the workers were allowed to bypass the time-consuming mixing process in the tower, with its automatic controls for preventing such things happening, they were free to dump their material into a vessel that was not designed to prevent the accumulation of a critical mass sufficient to support a chain reaction.

ECONOMIST: All over in a flash