Analog mechanism model include four bar linkage, crank and sliders mechanism, speed returning mechanism, perpendicular mechanism.

模拟的机构模型有四杆机构、曲柄滑块机构、速返机构、垂线机构等。

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The piece has four beats to the bar.

这首曲子每小节四拍。

《牛津词典》

The apparatus of claim 9, wherein the four-bar-linkage is a parallelogram.

该仪器索赔9日，其中四杆连杆是一个平行四边形。

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The bottom-left 4 x 4 pads represent drum sounds (touch the slider to scroll up and down through even more sounds), while the bottom-right quarter of the grid serves as a clip-length control (press and hold the first pad, tap the fourth for a four-bar loop, etc.).

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It is now nearly fully automated, bar four trains, and what has happened in a city where the unions are strong is a real eye opener.

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Sitting within toasting distance of the bartender, our party of four filling the bar to capacity, we polished off a few carafes of steaming sake while making small talk.

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