duct line

基本解釋

If the cross section area of the two branching ducts are different, the Included angle on the smaller branch duct against the extended center line is usually bigger.
若分枝管的截面積大小不同，則細(xì)支管與母管中心延長(zhǎng)線間的夾角較大；
Deformation cracks in the underground duct-line at a railway station project was analyzed from the perspective of materials and structures, and the solution was presented.
從材料與結(jié)構(gòu)的角度分析了某大型客站混凝土結(jié)構(gòu)地下風(fēng)道施工中出現(xiàn)裂縫的原因并提出解決辦法。
The line clamp designed in the article can take the place of the explosive pressing duct to take on the tensile force of line in working order. The line and the duct can be protected in this way.
設(shè)計(jì)的爆壓管替代線夾，在電路正常運(yùn)行的工況下替代爆壓續(xù)接管承擔(dān)導(dǎo)線的張力，從而達(dá)到保護(hù)線路和爆壓管的目的。

Professional gardener Chris Roach(ph) stands in line with his heavily duct taped blower.
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