Wannan samfurin tushenGB/T6739-1996zane-ƙera. Apply farfajiyar a kan wani tauri mafi girma abu, nuna juriya, wato, auna iyawar fenti film juriya karkatarwa. Yana nunawa da alamar fensil. Yana amfani da film tauri gwaji.

Bayani kamar haka:

1 Mai gwaji: don tabbatar da nauyin gauge1000 +/-50gA tsaye aiki a kan fuskar fuskar da gwajin bench, sa fuskar da gwajin bench ya kasance45Degree clamping kusurwa ba ya canzawa. Gwajin bench iya motsawa da kuma cuts scratches da fensil.

2 A sa na kasar Sin Brand Advanced zane pensulu6H-6B.Pencil shirya; Cut katako bar bayyana3mmLead core, zana da zagaye a kan sandpaper, don sanya karshen fensil a cikin jirgin sama don sa gefen ya kasance mai ƙarfi.

3 Test dole ne a zazzabi23+/-2digiri Celsius, dangane zafi50+/-51% zuwa 3.