variable fuel orifice carburetor 可变燃料口式汽化器
orifice fuel support 孔口燃料支架
fuel injection nozzle orifice 燃油喷油嘴孔
fuel injection valve orifice cleaning 喷油阀阀孔清洁
four-lobed orifice fuel supports 四瓣孔口燃料支架
fuel pressure regulating orifice 燃油压力调节孔
dual orifice fuel nozzle 双孔燃料喷嘴
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