Cov tub ceev xwm teb tau tuaj yeem ntes Campbell thaum nws tsav lub steamroller, uas muaj qhov ceev tshaj plaws 8 mph.
Thaum twg lawv tso tseg tsis siv lub tshuab nqus tsev?
Qee lub tuam txhab kev lag luam hauv Teb Chaws Asmeskas siv steamrollers los ntawm xyoo 1950 Hauv UK qee qhov tseem ua haujlwm txog thaum xyoo 1970s. Raws li cov tshuab hluav taws xob sab hauv tau txhim kho nyob rau hauv lub xyoo pua 20th, kerosene-, roj av- (petrol), thiab diesel-powered rollers maj mam hloov lawv cov chav-powered counterparts.
Puas siv lub tshuab nqus tsev vacuum?
A steamroller (los yog steam roller) yog ib daim ntawv ntawm cov menyuam txoj kev - ib hom kev siv tshuab hnyav siv rau qib theem, xws li txoj kev lossis tshav dav hlau - uas yog powered los ntawm lub tshuab nqus tsev… Lo lus steamroller feem ntau siv los hais txog txoj kev rollers feem ntau, tsis hais txog txoj kev propulsion.
Lub tshuab nqus tsev hnyav npaum li cas?
Thaum lub tshuab hluav taws xob muaj ntau dua, cov menyuam tuaj yeem hnyav dua. Lawv daim ntawv thov nthuav dav tshaj li thaj av thiab tau pom hauv kev tsim kho. Raws li cov tsheb tau hnyav dua thiab muaj zog, qhov hnyav ntawm cov menyuam tuaj yeem nce ntxiv. Niaj hnub no, cov menyuam tuaj yeem hnyav qhov twg ntawm 1 txog 20 tons
Puas Chav Rollers zoo rau cov plaub hau?
suab chais yog zoo rau cov plaub hau. Lawv muaj txiaj ntsig zoo dua li cov yob ib txwm siv vim tias lawv siv chav es tsis txhob siv cua sov los ntawm cov menyuam kub. Cov plaub hau setters siv cov ions tsis zoo los tsim txog peb npaug ntawm cov pa ntawm cov plaub hau zoo tib yam steamers.
