The technicians replaced two computer boards on Monday, he said.

他说，技术人员周一更换了两个电脑主板。

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The waste computer boards were crushed to smaller than -0.85 mm by a crusher and then separated into two parts of 25% conducting and 75% non-conducting materials by an electrostatic separator.

首先采用电选对破碎后的电脑主板实现金属与非金属的分离，其中金属导体产率为25%，非金属产品产率为75%。

youdao

The waste computer boards were crushed to smaller than -0.85 mm by a crusher and then separated into two parts of 25% conducting and 75% non-conducting materials by an electrostatic separator.

首先采用电选对破碎后的电脑主板实现金属与非金属的分离，其中金属导体产率为25%，非金属产品产率为75%。

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