双井抽油机机架  the frame of double-well pumping unit

游梁式抽油机抽油的井  beam pumping well

直线电机抽油机  linear motor pumping unit

柴油发动机机油油位  deo oil level

柴油机机油  diesel engine oils; diesel engine oil

柴油机机油冷却器  diesel oil cooler; lube oil cooler for diesel engine

铲运机发动机机油油面  scraper engine oil level

船用柴油机机架  Marine diesel engine frame

船用柴油机机油  marine diesel oil

发动机机油油槽  engine oil sump

发动机机油油槽区  engine oil sump compartment

发动机机油油尺  engine oil dipstick

发动机机油油底壳  engine oil pan

发动机机油油底壳加热器  engine oil pan heater

发动机机油油底壳组件  engine oil pan group

发动机机油油路简图  engine oil flow schematic

发动机机油油位  engine oil level

发动机机油油位表  engine oil level gauge

发动机机油油位检查  engine oil level check