Transporting physical samples can be time consuming and expensive.

实物样品运输费时且昂贵。

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Finalists that conform to the core judging criteria will be asked to submit physical samples of their designs for the final round of judging.

进入决赛者将须提交其实质设计样品以供末轮评判。

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They also will study chemical and physical properties of the soil samples with a method called infrared spectroscopy.

VOA: special.2009.01.20

Physical samples are kept in large cabinets and open shelves in an upstairs space.

WSJ: Lily Pads and Bamboo Stalks, Made of Clay

Then they make physical samples.

WSJ: Lily Pads and Bamboo Stalks, Made of Clay

The open beta version of PS Suite SDK incorporates a 2D graphics game engine and 2D physical engine, as well as a variety of content samples which utilize these libraries, in order to help developers create content that is optimized for portable devices.

ENGADGET: PlayStation Suite's 'open beta' SDK available to download now