The demand for traditional dragon boats decreased in the 1990s partly because of mass-produced dragon boats made of rubber or plastic at a lower cost.

90年代，传统龙舟的需求下降，部分原因是批量生产的橡皮或塑料龙舟更便宜。

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Be responsible for mass production of rubber, plastic parts and non-ferrous meta analysis and solving quality problem.

负责批量生产过程中橡胶、塑料件及其非金属零件的质量问题的分析、解决。

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When temperature up the mass transfer between bitumen and rubber increases and so does rubber dissolved.

提高温度会使沥青与橡胶之间的传质增加，溶解量增大。

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The steel mill he bought in 1989 was part of Ford's great River Rouge plant, where the father of mass-produced cars turned raw materials into vehicles on a single site -- transforming ore and rubber into finished cars (see box, p.122).

FORBES: Man of steel