Qhov ntsuas ntawm ib lub tog raj kheej kawm tiav yog dab tsi?
Qhov ntsuas ntawm ib lub tog raj kheej kawm tiav yog dab tsi?

Video: Qhov ntsuas ntawm ib lub tog raj kheej kawm tiav yog dab tsi?

Video: Qhov ntsuas ntawm ib lub tog raj kheej kawm tiav yog dab tsi?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

Cov kawm tiav lub tog raj kheej nplai yog ib txoj cai nplai , thiab nyeem zoo li tus kav. Cov nplai yog nyeem rau ib tus lej dhau qhov tsawg tshaj plaws nplai faib los ntawm kev kwv yees (interpolating) ntawm cov kev faib no. Nrog 50-ml kawm tiav lub tog raj kheej , nyeem thiab sau qhov ntim rau qhov ze tshaj 0.1 mL.

Tib neeg kuj nug, qhov tseeb npaum li cas yog lub tog raj kheej kawm tiav?

Cov qhov tseeb specification ntawm kawm tiav cylinders yog coj los ua ib feem pua ntawm tag nrho cov nplai, uas yog, ntim ntawm cov kab sau saum toj kawg nkaus. Rau chav kawm B kawm tiav cylinders , cov hais qhov tseeb ntawm 1% txhais tau tias 100ml lub tog raj kheej thaum sau kom raug yuav raug 100 ± 1ml.

Secondly, dab tsi yog ib tug scale increment? A nplai yog ua los ntawm ib tug series ntawm kev kawm tiav. Cov scale nce yog qhov ntau ntawm ob qhov kev kawm tiav uas nyob ib sab. Yuav nrhiav tau scale nce , rho tawm qhov tseem ceeb ntawm ob qhov uas nyob ib sab sau npe kawm tiav thiab faib los ntawm tus lej ntawm cov ntu nruab nrab ntawm lawv.

Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog tus lej ntawm lub cylinder kawm tiav hu ua?

Lawv yuav siv lub thawv hu ua ib kawm tiav lub tog raj kheej ntsuas cov kua. Kawm tiav cylinders muaj tus lej nyob rau sab uas pab koj txiav txim siab ntim. Volume yog ntsuas nyob rau hauv units hu ua litres los yog feem ntawm liters hu ua milliliter (ml).

Koj nyeem ib lub tog raj kheej kawm tiav li cas?

Qhov chaw kawm tiav lub tog raj kheej ntawm ib qho chaw tiaj tus thiab saib qhov siab ntawm cov kua hauv lub lub tog raj kheej nrog koj ob lub qhov muag ncaj qha theem nrog cov kua. Cov kua yuav zoo li nkhaus downward. Qhov nkhaus no hu ua meniscus. Ib txwm nyeem ntsuas nyob rau hauv qab ntawm lub meniscus.

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