These units boil down to number, weight, or volume.

这些单位都归结为数字，重量或者体积。

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The Shuttle galley was redesigned in 1991 to reduce the weight and volume and to update the electronics.

航天飞机上的厨房于1991年重新设计，以减少重量、体积和更新电子设备。

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Figure 2 shows a decision table that assigns shipping and handling charges for various combinations of package weight and volume.

图2显示了为包裹的各种重量与体积组合分配运输和处理费用的决策表。

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That said, different combinations of materials have different electricity-producing potential for the same weight and volume.

FORBES: Running in place

Compared to the very first PS3 model with 60GB HDD, the internal volume as well as its thickness and weight are trimmed down to approximately two-thirds.

ENGADGET: Sony unveils slimmer PS3: $300, lands in September (updated!)