Koj paub ntau npaum li cas txog cov qauv qauv ntawm cov ris tsho zoo nkauj?

Lub sijhawm tuaj yeem taug qab mus rau xyoo 1920s. Lub sijhawm ntawd, tib neeg pom tias miv lub qhov muag tuaj yeem tso lub teeb thaum hmo ntuj, yog li txawm tias cov miv dub hauv qhov tsaus ntuj tuaj yeem pom los ntawm lawv lub qhov muag ci. Yog li ntawd, tib neeg pib kawm cov ntaub ntawv xav tau.
Xyoo 1950, Suav kws tshawb fawb Dr. Dong Qifang tau tsim cov iav hlaws taw qhia. Cov iav hlaws yog ua los ntawm silicate. Ntxiv nrog rau kev ruaj ntseg tshuaj zoo, txhua yam muaj zog thiab hluav taws xob rwb thaiv tsev, qhov tseem ceeb tshaj plaws yog tias lawv tuaj yeem cuam tshuam lub teeb rov qab. Lub hauv paus ntsiab lus ntawm retroreflection yog qhov tshwj xeeb vim tias nws tuaj yeem cuam tshuam lub teeb raws li txoj hauv kev qub yam tsis muaj lub kaum sab xis deflection.
Cov iav hlaws reflective cov ntaub ntawv tau los ua. Ntau lab ntawm qhov ntsuas qhov ntsuas siab siab iav hlaws yog sib npaug ntawm daim ntaub, txog 3/4 ntawm txoj kab uas hla ntawm cov ntaub plaub. Qhov saum npoo ntawm qhov thib ob ib nrab ntawm cov hlaws yog coated nrog ib txheej hlau reflective. Thaum lub teeb ci rau ntawm qhov chaw ntawm cov khoom, nws tau cuam tshuam rau lub teeb ci los ntawm lub hauv paus ntsiab lus ntawm kev xav, uas tuaj yeem txhim kho qhov pom ntawm lub teeb pom kev zoo thiab ib puag ncig thaum hmo ntuj, thiab muaj qhov muag zoo, ceeb toom, thiab kev nyab xeeb. .
Hauv kev tsim kho, kev mus ncig hmo ntuj, kev ua si sab nraum zoov, kev cawm, kev ua haujlwm pub dawb, thiab lwm yam, nws yog ib qho tseem ceeb tshwj xeeb rau hnav khaub ncaws ua haujlwm ua los ntawm cov ntaub ntawv muaj kev cuam tshuam los muab kev ceeb toom qhov muag. Guard shield reflective khaub ncaws tuaj yeem ua kom pom tseeb ntawm tus neeg hnav lub ntsej muag, tsis yog tsuas yog zam kev nyab xeeb kev raug mob los ntawm lub teeb, tab sis kuj tso cai rau lwm tus kom pom lawv tus kheej sai thiab raws sijhawm.