Kab tshuab Viscosimeter Rheometer yog qhov khoob tshuab uas siv los xam qhov ntau ntawm dej. Khoob tshuab no yog qhov tseem ceeb rau ntau yav tshuab, piv txwv li yav tshuab uas tsim cov khoom zoo li: qhov tshuab, qhov tshuab ntawm lub cev, thiab cov khoom ua haujlwm rau lub cev. Yog li dej ntau, nws yuav dhau ntev. Yog li dej tsis ntau, nws yuav dhau ncaj ncees. Ua kom paub qhov ntau ntawm dej yuav pab cov neeg tsim khoom tsim cov khoom zoo dua. Piv txwv li, yog li cov neeg tsim khoom tsim cov khoom uas muaj dej ntau, lawv yuav tsum paub qhov ntau ntawm cov khoom uas lawv tsim, kom cov khoom no yuav dhau ncaj ncees, tab sis tsis ntau heev. ZONWON muab cov Rheometer uas cov neeg tsim khoom xav tau los xam qhov tseeb kom tsim cov khoom zoo dua. Viscometers Rheometer uas cov neeg tsim khoom xav tau los xam qhov tseeb kom tsim cov khoom zoo dua.