Xov xwm
Ruitai Chav Ua Noj Riam: Koj qhov Premier Qhov Chaw rau Kev Cai Chav Ua Noj Riam Teeb los ntawm Tuam Tshoj
Lus
Ruitai Chav Ua Noj Riam: Koj qhov Premier Qhov Chaw rau Kev Cai Chav Ua Noj Riam Teeb los ntawm Tuam Tshoj
Tom qab cov txheej txheem thermal, lub periphery ntawm chav ua noj riam hniav yog polished nrog polishing siv.
Tom qab cov txheej txheem thermal, lub periphery ntawm chav ua noj riam hniav yog polished nrog polishing siv. Lub tshuab computer tswj tau kho cov duab ntawm riam nrog whetstone. Tom qab ntawd, qhov saum npoo ntawm cov hniav hau yog thinly grind nyob rau hauv cov txheej txheem nto sib tsoo. Txoj kev sib tsoo saum npoo no thiab cov txheej txheem polishing hauv qab no yog cov txheej txheem tseem ceeb.
Kev mob siab rau pab cov neeg siv khoom daws lawv cov teeb meem nyuaj tshaj plaws thiab cov teeb meem thev naus laus zis.
Thov ua kom tiav daim ntawv hauv qab no, thiab peb pab neeg muag khoom yuav tiv tauj koj sai.
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