可调扳手：一个10英寸型号是完美的尺寸。

Adjustable wrench: a 10-inch model is the perfect size.

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所用的加热炉的尺寸与型号要进行控制，使每项操作的温度能够在给定的范围内。

The furnace must be of the proper size and type and controlled, so the temperatures are kept within the prescribed limits for each operation.

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而且，PC和Macintosh的型号不同，屏幕尺寸和相应的canvas也会不同。

And, different models of both the PC and the Macintosh can have different screen sizes and corresponding canvases.

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