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托梁,承接梁穿过孔洞,如壁炉地面,到插梁末端能被固定的横梁。
A beam across an opening, such as a hearth, into which the ends of joists can be fitted.
youdao
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托梁,承接梁穿过孔洞,如壁炉地面,到插梁末端能被固定的横梁。
A beam across an opening, such as a hearth, into which the ends of joists can be fitted.
youdao