| 单词 | h girder |
| 释义 | > as lemmasH girder H girder n. Π 1902 D. Salomons in A. C. Harmsworth et al. Motors & Motor-driving (Badminton Libr. of Sports & Pastimes) vi. 90 The roof of the house is strengthened at certain points by cross timbers which support two small H girders, and carry iron frames to which are attached pulley blocks. < as lemmas |
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