Ib tus cwj mem txhua yam, kuj yog cwj mem clutch, yog cwj mem nrog hloov pauv tau thiab siv tau cov khoom xim xim hu ua "lead". Cov hlau lead, feem ntau yog ua los ntawm graphite, tsis yog khi rau sab nrauv, thiab tuaj yeem txuas ntxiv raws li nws cov ntsiab lus tau hnav tam sim ntawd thaum nws tau siv.
Kev siv cwj mem yog dab tsi?
A › cwjmem (tseem hu ua: graphite mem hluav) yog cov khoom siv sau ntawv nrog cov graphite txhuas kos rau hauv cov ncej ntoo. Nws yog tsuas yog siv rau kos duab kos duab thiab kos duab, rau stenography lossis sau ntawvNws cov txiaj ntsig yog kev siv yooj yim thiab muaj peev xwm tshem tawm yam koj tau kos nrog lub lwv.
Dab tsi yog qhov txawv ntawm daim ntawv sau thiab xaum li niaj zaus?
Dab tsi yog qhov txawv ntawm daim ntawv sau thiab xaum tshuab? Ib qho ntawm qhov sib txawv tseem ceeb yogtus xaum xaum muaj lub tes tsho ntev dua Lub tes tsho hlau lead ntawm tus cwj mem yog ib feem ntawm tus cwj mem uas txuas los ntawm lub tog raj kheej thiab xaus qhov twg cov hlau lead tawm.
Tus cwj mem twg pom zoo rau kev sau ntawv?
Yog li ntawd. Tam sim no koj paub. Cov cwj mem zoo tshaj plaws rau kev kos duab thiab kos duab yog HB, 2B, 6B thiab 9B. Zoo tshaj qhov yuav khoom tag nrho cov xaum, feem ntau yuav tsis siv.
Koj puas tuaj yeem siv cov cwj mem sau ntawv?
Tab sis raws li kev siv mus, kuv pom ntau cov cwj mem ua haujlwmthiab rau cov kab txiav txim raws li cov xaum xaum. Thiab sau ntawv xaum ua haujlwm zoo rau kev sau ntawv nrog. Hauv cov hlab ntsha zoo sib xws, Kuv saib ntev thiab nyuaj rau qhov zoo "drafting lead" rau kuv cov xaum tshuab.
