Thaum twg yog lub tshuab ntxhua khaub ncaws tsim?

Cov txheej txheem:

Thaum twg yog lub tshuab ntxhua khaub ncaws tsim?
Thaum twg yog lub tshuab ntxhua khaub ncaws tsim?

Video: Thaum twg yog lub tshuab ntxhua khaub ncaws tsim?

Video: Thaum twg yog lub tshuab ntxhua khaub ncaws tsim?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Hlis ntuj nqeg
Anonim

A "fluted" hlau washboard tau patented hauv Tebchaws Meskas los ntawm Stephen Rust hauv 1833Zinc washboards tau tsim nyob rau hauv Tebchaws Meskas los ntawm nruab nrab ntawm lub xyoo pua 19th. Nyob rau hauv lub xyoo pua 20th thiab thaum ntxov xyoo pua 21st, ridges ntawm galvanized steel yog feem ntau, tab sis ib co niaj hnub boards yog ua los ntawm iav.

Thaum twg siv cov tshuaj txhuam hniav?

Khaub Ncaws - Kev Tsim Kho ntawm Lub Tshuab ntxhua khaub ncaws

Raws li kev paub ntau yam uas kev txhuam thiab kev sib tsoo tuaj yeem tau txais cov ntaub huv si, thawj daim ntaub nplaum tau tsim nyob rau hauv 1797. Ua los ntawm cov ntoo thiab hlau, nws coj cov tswv yim yooj yim thiab ua rau kev ntxhua khaub ncaws yooj yim dua thiab yooj yim dua.

cov boards qub ua los ntawm dab tsi?

Thawj lub boards tau ua los ntawm tag nrho wood, tab sis nyob rau hauv lub xyoo pua 19th steel thiab zinc ridges hloov cov ntoo, tab sis lawv tseem muaj ib tug ntoo ncej.

Lawv ntxhua khaub ncaws li cas xyoo 1700?

Khaub ncaws tuaj yeem yog ntxhua hauv tub, feem ntau nrog cov zis tsis zoo los yog ntoo tshauv ntxiv rau hauv dej, thiab tsoo hauv qab ko taw lossis ntaus nrog ntoo bat kom huv si. Tab sis ntau tus poj niam tau ntxuav lawv hauv cov dej ntws thiab cov kwj deg, thiab cov dej loj dua feem ntau muaj cov dav hlau tshwj xeeb los pab txhawb qhov no, xws li 'le levenderebrigge' ntawm Thames.

lub tshuab ntxhua khaub ncaws siv rau dab tsi?

Ib lub tshuab ntxhua khaub ncaws yog lub cuab yeej tsim los rau tes ntxhua khaub ncaws. Kev txhuam zoo ib yam li kev ntaus cov khaub ncaws lossis rub rau ntawm pob zeb, tab sis maj mam rau ntawm daim ntaub.

Pom zoo: