For example, it is challenging for the chemical etching process to drop below a1.5 aspect ratio while, with laser cutting and electroforming, apertures can be produced that have a1:1 aspect ratio to the stencil thickness.是什么意思_For example, it is challenging for the chemical etching process to drop below a1.5 aspect ratio while, with laser cutting and electroforming, apertures can be produced that have a1:1 aspect ratio to the stencil thickness.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句