... microprogram storage 微程序存储器 micropunch 微穿孔 micropunch plate muffler 微穿孔板消声器 ...
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试验表明，微穿孔板吸声结构可有效地降低排气噪声。
Results show that the acoustic system of micro perforation plate can effectively reduce discharge noise.
以第一发明人获得一项有关微穿孔板方面的发明专利。
Obtain to concern small bore a hole with the first inventor board the invention of the respect is patent.
铜板作微穿孔处理，使得空气流通但阻挡了雨水的侵入。
The micro perforation of the copper allows the passage of air while blocking rainwater.
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