Qhia txog kev siv cov iav iav lub raj mis ntsuas lub tog raj kheej thiab lwm yam
1.Test tubes feem ntau siv: 2.Lub beaker feem ntau yog siv rau: 3. Flask (round hauv qab lub raj mis, ca hauv qab khob): 4. Erlenmeyer fwj feem ntau yog siv rau: 5.Evaporating tais diav feem ntau yog siv rau concentration los yog evaporation. ntawm kev daws teeb meem. 6.Cov yas dropper yog siv los tshem tawm thiab ntxiv cov kua me me. Lus Cim: 7.A ntsuas lub tog raj kheej
Hlis ntuj nqeg 29, 2018
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