Electric insulating materials, and low temperature materials were ranked by three improved methods mentioned above, respectively.
并分别对候选电绝缘材料和低温存储罐材料进行了评价。
A window frame made of insulating materials according to the principle of an electric fly-flap.
根据电蚊蝇拍的原理，用绝缘材料做窗框。
A window frame made of insulating materials according to the principle of an electric fly-flap.
根据电蚊蝇拍的原理，用绝缘材料做窗框。
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