Second chapter, crystal structure and X-beam test technology;

第二章，晶体结构与X射线测试技术；

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All provide a reliable reference for the design of focusing coil and beam test.

上述工作为确定聚焦线圈的设计方案和加速器的出束实验提供了可靠、丰富的数据。

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Students will determine the relative stiffness of two aluminum beam test specimens of equal cross sectional area but different cross-sectional shape and see how they conform to theory.

学生要确定两个横截面面积相同而形状不同的铝梁实验样本的相对刚度，并研究结果如何与理论一致。

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The inflatable test facility, known as a Bigelow Expandable Activity Module, or BEAM, will launch aboard a SpaceX cargo resupply mission to the ISS in 2015.

FORBES: NASA Expanding ISS With Bigelow Aerospace Inflatable

Astronauts will test the ability of the bladder, known as the Bigelow Expandable Activity Module, or BEAM, to withstand heat, radiation, debris and other assaults.

NPR: Space Station To Get $18 Million Balloon-Like Room