A ma ama na-esoro librication system usoro 2 strok ndị na-enye ya - onyinye mmanụ ọkụ mmanụ - Jiaanhe
A ma ama na-eme nhọrọ kachasị mma nke usoro 2 strok na-enye ndị na-enye mmanụ lubrication - jianhedetail:
Ihe onyonyo zuru ezu:
Ntuziaka Ngwaahịa metụtara:
A na-amata ngwongwo anyị na ndị ọrụ nwere ntụkwasị obi na-agbanwe agbanwe na-ejikọkarị ya na ndị ọrụ na-ewetara ya igwe - Jianhe, na-enyefe ụwa niile, India, Costa Rica, na ebumnuche nke "ntụpọ efu". Iji lekọta gburugburu ebe obibi, na ịlaghachi na-elekọta mmadụ, ọrụ onye ọrụ na-elekọta mmadụ yana ọrụ nke ọrụ. Anyị na-anabata ndị enyi site n'ụwa niile ịga ma na-eduzi anyị ka anyị nwee ike nweta mmeri - mmeri ọnụ ọnụ.