This brush holder of technology and structure has obsolete technology, lack of support structure is complex and the friction coefficient.

这种刷握的技术和结构己陈旧过时，技术中的不足是支架结构复杂摩擦系数大。

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They come here to brush up on technology.

他们来这里以求提高技术。

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Brush plating technology for repairing the plastic dies has been adopted.

利用电刷镀技术对塑料模具进行修复。

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If it can survive without a government, it can probably brush off modern technology, too.

ECONOMIST: Somalia��s mighty shilling

Projects which have already been supported by the University Challenge and Science Enterprise Challenge include a sewer robot - resembling a giant, jointed brush - developed by Durham Pipeline Technology, set up by Durham University.

BBC: pipe cleaner

Will your classes help you brush up on industry trends or familiarize yourself with new technology?

FORBES: Balancing Work and Grad School? Your 4-Step Survival Guide