One probably made the cancer drug-resistant by enabling the tumor cells to pump chemotherapy drugs right out of the cell before they could do their work.

有一种突变的基因能够调控肿瘤细胞使其在化疗药物发挥作用前将药物泵出细胞外，从而具有抗药性。

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Mechanical seal with tungsten carbide hard wear-resistant, with durable, wear-resistant characteristics, can pump more than 8000 hours of continuous operation safe.

机械密封采用硬质耐磨碳化钨，具有耐用、耐磨等特点，可以使泵安全连续运行8000小时以上。

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In addition, it should be considered for cutlery, needle valves, ball check valves, valve seats, pump parts, ball studs, bushings, and wear-resistant textile components.

首选应用是轴承结构，包括滚珠和轴套。还有，它也能用来做刀具、针形阀、球型止回阀、阀门基座、泵零件、球头螺栓、轴套、抗磨损纺织机械。

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