Cov kab sib dhos ua lub luag haujlwm tseem ceeb hauv kev tsim khoom; optimizing lawv ncaj qha cuam tshuam cov khoom zoo thiab ntau lawm efficiency, ua qhov no yog ib qho teeb meem tseem ceeb rau cov lag luam.
Thaum lub sij hawm thauj mus los, cov kab sib dhos yuav tsum ua raws li cov kev cai uas cuam tshuam thiab yuav tsum tsis txhob cuam tshuam nrog acids lossis alkalis. Cov chaw tsav tsheb thiab cov khoom siv hluav taws xob yuav tsum tau tiv thaiv kev vibration hnyav thiab cuam tshuam, xws li khawb, tsoo, lossis poob. Kev ntsuas los tiv thaiv nag thiab ya raws kev puas tsuaj yuav tsum tau ua thaum tuav, thiab cov khoom siv yuav tsum tau muab khaws cia rau hauv lub tsev rau khoom.
