Ib tug yuav tsum raug tshem tawm qhov siab
Raws li tus neeg lub cev mechanics, raug tshem tawm qhov siab zaum zov me nyuam 750 ~ 850; 850 uas qhov siab ~ 920-khiav lag luam. Reagent thiab qhov siab 1200 ~ 1650. Txee siab 1800 ~ 2200.
B ruaj ntseg channel
Hom kuaj qhov rooj dav rau 900 ~ 1500 hli, thiab nruab muaj ib tug yuav tsum zoo, swm nrog txoj kev tiv thaiv tej qhov tseem ceeb heev rau cov xwm txheej tshwm sim channel thaiv cov hlab, tsim kob, ceg av qab teb, zoo li tus l, zoo li tus u kuaj layout npaj. Loj thiab ib ob CCTV zov me nyuam, yov ib yam li hli 1500, yog tus mus xwb dua li 1200. Nyob deb li cas txee rau ob mog me detox txim ib yam li hli 1500.
C lawv dim pa
1, chaw dim pa thiab roj pipeline kev ruaj ntseg yuav tsum: txug tej yaam yuav tsum raws Science News for KIDS kuaj kev ruaj ntseg yuav tsum, xws li hluav taws, tau tawg, corrosion-resistant, los tau, xob, kom lub chaw dim pa thiab detoxify rau koj lub cev rau hauv lub xeev kev zov me nyuam zoo, ruaj ntseg yuav tsum yog cov thawj tseem ceeb tau.