In the front window, however, you can watch the cooks knead the buns and bake them on a coal-heated drum.

然而，在前面的窗户里，你可以看到厨师们揉捏小圆面包，然后在煤炉上烤着吃。

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Heated with saturated steam, to increase the drum wall thickness and weight.

用饱和蒸汽加热的，须增加鼓壁的厚度和重量。

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The main body of a rotary dryer is revolving round drum with a small slope, is a kind of equipment that is heated by high temperature and can transport matter, and is widely used.

转筒干燥器的主体是略带倾斜并能回转的圆筒体，是一种既受高温加热又兼输送的设备，它的应用十分广泛。

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Raw rubber is heated and extruded on to the drum, followed by successive layers of steel wires and strips as the tyre takes shape.

ECONOMIST: Re-inventing the wheel