clear span

基本解釋

It had a wood-trussed clear span of over 25 meters (83 feet). It finally collapsed in the middle of the second century.
在二世紀中期倒塌的它木桁架凈跨超過25米。
It is quite strange that no final conclusion has yet been reached on the clear span of this ancient bridge as the most basic datum. Public opinions are divergent.
奇怪的是，作為此古橋最基本的技術數(shù)據(jù)的凈跨徑現(xiàn)尚無定論，眾說紛紜。
The article proposes to clear away the earth and stones covering the two springs of arch of the bridge and then survey and determine with accuracy its clear span .
該文建議挖開掩蓋趙州橋拱腳的石塊和泥土，找到兩拱腳，精確測定凈跨徑。