柴油机精密偶件
diesel precise paired parts
精密偶件
precision coupling
precise couple
Precision coupling components
Precise fitting pieces assembly
偶件表面粗糙度
counterpart surface roughness
喷油嘴偶件
nozzle matching parts
injection nozzle matching parts
oil nozzle assembly
Diesel injector nozzle
nozzle assembly
injector valve and orifice
针阀偶件
needle valve assembly
jnjection nozzle matching parts
valve piece
柱塞偶件
plunger matching parts
Plunger coupled parts
plunger rpd
plunger couple
Plunger pair
Plunger MatchingParts
plunger assembly
Plunger and Barrel Assembly
Plunger-and-Barrel Assembly