Hauv kev ua yeeb yaj kiab, kev tshaj tawm, thiab lwm yam kev tsim tawm suab paj nruag, "lub taub hau chaw taws teeb" yog ib qho tseem ceeb ntawm lub koob yees duab pabcuam.Qhov no yog qhov tseeb tshwj xeeb hauv kev tsim cov yeeb yaj kiab, qhov twg ntau hom chaw taws teeb taub hau xws li telescopic caj npab thiab tsheb-mounted caj npab yog siv.Hauv qab no, cia ...
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