Weighing 25 percent less than the conventional 18-mm tube, the 16-mm tube allows four image tubes to comprise a system without adversely affecting the total weight.

这种16毫米管的重量比常规的18毫米管轻25%，可以用4个成像管组成一个系统，而且对系统的总重量没有不良影响。

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A baton is a hollow tube. Usually made of metal, not longer than 30 centimeters and weighing no less than 50 grams.

接力棒是一个中空管，通常由金属制成，长度不超过30厘米，重量不低于50克。

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An initial weight is obtained by weighing the mandrel and the tube of plastic film then a slurry composition is deposited inside the closed tube.

通过称量心轴和塑料薄膜管以得到初始重量，然后将浆料复合物沉积到密闭管中。

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Using Thinkid, Case changed the bike's backbone from an unwieldy 4-inch-wide aluminum tube to a seamless carbon fiber piece weighing 14 pounds.

FORBES: Easy Designer