Feem ntau, cov cua sov siab tshaj plaws uas cov tshuaj yas ua cov yas yas tuaj yeem nqa yog 108 degrees, thiab qhov cua sov tsawg tshaj plaws yog rho tawm 70 degrees. Yog li no, nyob rau hauv ib txwm muaj tshwm sim, qhov kub ntawm cov kua uas muaj nyob hauv cov thoob roj hauv cov yas yuav tsum rho tawm txog 40 degrees txog zero txog rau. Kaum qib yog qhov tsim nyog dua. Yog tias nws tshaj qhov ntsuas tus nqi no, thaum cov kua uas muaj qhov hnyav dua lossis muaj qhov kub dua, muaj cov ntsuas tiv thaiv yuav tsum ntsuas cov yas tshuaj kom tsis txhob deformation ntawm lub thoob yas. Feem ntau peb nruab cov ntawv hlau tiv hauv cov thoob yas. Yog tias cov tshuaj tua kab yas siv los teeb cov kua uas yuav tsim cov tshuaj lom neeg, kev tiv thaiv yuav tsum tau txais los xyuas kom meej lawv cov tshuaj tiv thaiv thiab seb lawv tuaj yeem tiv taus lawv qhov kub thiab txias. Cov thoob yas ua kua muaj peev xwm feem ntau yog nruab nrog kua. Hauv chav sov, ntsev, alkali, thiab lwm cov khoom sib xyaw tsis muaj teeb meem. Siv tshuaj tua kab yas siv tsis tau los txhim kho cov kua dej muaj zog, xws li sulfuric acid nrog qhov kub siab tshaj 60 degrees, qhov siab siab tshaj 75%, mloog zoo nitric acid siab dua 30%, thiab yog li ntawd.https: //www.fhpails .//
Yuav ua li cas siab kub tuaj yeem ua tshuaj lom neeg cov tog raj ntoo yas tiv thaiv?
Aug 11, 2020
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