Qhov zoo ntawm cov khoom siv cawv cawv

Txawm li cas los xij, qhov zoo ntawm cov cawv cawv feem ntau nyob hauv nws txoj kev nyab xeeb thiab kev txav mus los. Txawm hais tias nws qhov hluav taws kub tsis zoo me ntsis, nws yooj yim dua los siv.

1. Cov roj cawv uas muaj cawv yog cov roj siv rau kev noj cov lauj kaub kub thiab noj hmo sab nraum zoov. Lub sij hawm hlawv ntawm ib daim ntawm cov dej cawv sib txawv raws li qhov loj thiab qhov kub ntawm ib puag ncig. 20 mus rau 30g ntawm cov cawv cawv ib txwm tuaj yeem hlawv li 10 mus rau 15 feeb. Piv nrog rau cov kua dej cawv, cov cawv cawv yog qhov sib txawv ntawm qhov muaj pes tsawg leeg, kev nyab xeeb, thiab kev txav mus los. Vim tias cov cawv muaj cawv muaj cov tshuaj tua kab mob, nws feem ntau tsis tuaj yeem tiv taus qhov kub hnyiab xws li kua cawv ntawm tib lub ntsiab lus. Nws muaj kev nyab xeeb thiab yooj yim dua.

2. Qhov sib txawv ntawm cov kua dej cawv thiab kua cawv. Muaj ntau qhov sib txawv ntawm cov dej cawv thiab kua cawv, feem ntau yog hais txog kev muaj pes tsawg leeg, kev nyab xeeb, thiab kev txav mus los. Ua ntej ntawm tag nrho cov, nyob rau hauv cov nqe lus ntawm cov khoom xyaw, kua cawv yog ethanol, thiab ib tug me me ntawm cov dej yog ntxiv los ua cawv ntawm txawv concentrations; Cov khoom xyaw ntawm cov cawv muaj cawv, calcium acetate, nitrocellulose thiab lwm yam tshuaj tua kab mob.

3. Nyob rau hauv cov nqe lus ntawm kev nyab xeeb, cov khoom siv cawv muaj kev nyab xeeb thiab tuaj yeem ntxiv ncaj qha thaum siv nws. Cov kua cawv tsis tuaj yeem ntxiv ncaj qha thaum muaj hluav taws, txwv tsis pub nws yuav ua rau muaj kev phom sij thiab tuaj yeem ua rau muaj hluav taws kub. Nyob rau hauv cov nqe lus ntawm portability, kua cawv yog tsis yooj yim rau khaws, thiab nws yog nyob rau hauv ib tug kua lub xeev, yog li nws tsis yooj yim rau nqa; Cov cawv cawv yog nyob rau hauv daim ntawv, thiab nws yooj yim heev rau nqa yog tias nws raug kaw thiab khaws cia.

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