这根大梁承受了上面那一层的全部重量.This beam bears the whole weight of the upper floor.窗框在大梁的重压下垮掉了.The window frame folded up under the heavy weight of the beam.这些大梁是由支架撑着.The girders are carried on trestles....
Inserting the key in the lock, he turned it and pulled the door open.他把钥匙插进锁里转了一下,拉开了门.The resonator ( astigmatic ) can be compensated by inserting a suitable thickness Brewster plate in the cavity.在腔内插入一定厚度的布儒斯特片可以部分消除腔...