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In order to improve the conductivity and abrasive resistance of copper-graphite composite brush ,influence of carbon fiber content on the electrical wear behaviors of the copper-graphite brush were investigated under two conditions of electrifying and non-electrifying.

为进一步改善铜-石墨复合材料电刷的导电和耐磨性，提高其使用寿命，研究了在不通电和通电2种条件下，碳纤维含量对铜-石墨电刷磨损量的影响。

In order to improve the conductivity and abrasive resistance of copper-graphite composite brush,influence of carbon fiber content on the electrical wear behaviors of the copper-graphite brush were investigated under two conditions of electrifying and non-electrifying.

结果表明，在试验条件下，在合金接触线-黄铜粉末冶金滑块系统的电磨损过程中，Cu-Cr-Zr合金接触线的电磨损率随电流强度升高显著加强，由加载较小电流引起的磨损份额为0。

The output -6KV high voltage is applied to the front end of the carbon fiber brush and negative ions are generated when air goes through the brush.

利用单片机软件产生20KHz间歇性脉冲信号，通过功放、升压、整流变换，输出-6KV左右的高压，加到碳纤维电极上，由空气电离效应产生所需的负离子。

The intermittent pulse signal with frequency 20khz is generated by embedded software and then amplified by external power driving and voltage transforming circuit. the output -6kv high voltage is applied to the front end of the carbon fiber brush and negative ions are generated when air goes through the brush.

利用单片机软件产生20khz间歇性脉冲信号，通过功放、升压、整流变换，输出-6kv左右的高压，加到碳纤维电极上，由空气电离效应产生所需的负离子。

The brush holder is connected with the metallic-joint piece on which the stainless brush bristle is poured.

刷持有人是指与金属接头件，其中对不锈钢刷刚毛是倾注了。

Based on the alloy,a new generation of brush holder high temperature constant press brush holder has been developed.

本文提出了一种新型的电刷弹簧材料—高温恒压刷握弹簧材料3YC27合金；并介绍了在此基础上创建的新一代刷握—3YC27合金高温恒压刷握。

Apply a fine layer of the bonding agent over the etched enamel using a brush holder and a new brush.

用刷托或一个新的毛刷在经过酸蚀的牙釉质上涂一层粘结剂。

The utility model adopts the structure that the brush holder(1) is connected with the metal connector(3)on which the stainless brush bristle(4) is moulded .

实用新型采用结构表示，电刷架（ 1 ）与金属连接器（ 3 ），其中不锈钢刷刚毛（ 4 ），是振奋的事。

Iv Brushes and brush arms shall move freely within the brush holder.

炭刷和炭刷臂应在炭刷架上自由活动。

The structure of the utility model is that the brush holder(1) is connected with the metal connector(3)on which the stainless brush bristl(4) is moulded .The utility model has the advantages of corrosion-resistance, rust-resistance, unhairing-resistance, no loosing,long service life, clean, beautiful appearance, economy and practicability.

实用新型的结构是炭刷架(1)用(3)连接不锈的刷子bristl的金属连接器(4)被铸造实用新型有腐蚀抵抗、铁锈抵抗， unhairing抵抗，没有疏松，长的产品使用期限，干净，美好的出现、经济和可实行性的好处。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。