Keeb kwm ntawm lub npe Lub npe yog muab los ntawm Afrikaans lo lus dolos- plural dolosse. Lo lus no muaj ob lub ntsiab lus muab. Rosenthal (1961) hais tias nws yog ib qho kev cog lus ntawm 'dobbel osse', lossis 'kev twv txiaj' (Afrikaans) 'pob txha' (los ntawm Latin).
Thaum twg lub dolos tau tsim?
thawj dolos tau tsim nyob rau hauv 1963 thiab nws yog qhov kev tsim khoom zoo hauv South African. Nws tau pib hu ua "lub Merrifield block", raws li Nrov Mechanics, tom qab ib zaug Chaw nres nkoj ntawm East London System Harbor Engineer, Eric Merrifield.
Koj tuaj yeem pom dolos nyob qhov twg?
Invented nyob rau hauv teb chaws Africa cov pob zeb loj loj, hu ua dolosse, ib yam dab tsi dolos, disperse lub zog ntawm nthwv dej, los tiv thaiv tib neeg nyob rau hauv lub hiav txwv npau taws. Lawv tau tsim nyob rau sab hnub tuaj London, lub nroog chaw nres nkoj hauv South Africa, xyoo 1963 thiab pom tau hauv ntau lab thoob ntiaj teb.
Leej twg invented Dolos?
Credit for invention
Tus tsim ntawm dolos feem ntau yog muab rau the South African Eric Mowbray Merrifield, ib zaug East London Harbor Engineer (los ntawm 1961– 1976). Thaum xyoo 1990s qhov kev thov ntawm Aubrey Kruger tau txais txiaj ntsig ntau dua.
Leej twg invented the sea wall?
thawj seawalls feem ntau yog vim Roman Emperor Constantine I, tseem hu ua Constantine the Great, uas tau txiav txim rau lawv kev tsim kho hauv 448 AD Cov thawj marine barricades tau ua ib feem. ntawm kev tiv thaiv loj duatsim los tiv thaiv lub nroog Constantinople (tam sim no Istanbul, Qaib ntxhw) los ntawm …
