| 单词 | beam |
| 释义 | beamDefinition Horizontal or inclined structural member spanning a distance between one or more supports, and carrying vertical loads across (transverse to) its longitudinal axis, as a girder, joist, purlin, or rafter. Three basic types of beams are: (1) Simple span, supported at both ends, (2) Continuous, supported at more than two points, and (3) Cantilever, supported at one end with the other end overhanging and free. Use 'beam' in a SentenceSome construction jobs will involve a very long beam and you will need to have the equipment to move it properly. The light beamed into James' room, reminding him quickly that it was time to get up and go on his morning hike up the mountain. The lunar space module beam was something that was in the works for over 20 years as a black project in the United States Army particularly designed for defense purposes. |
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