下气缸 meaning in English

lower cylinder

Slbocle test method for evaluating lubricity of diesel fuels by the scuffing load ball - on - cylinder lubricity evaluator slbocle
通过磨损负载下气缸上球润滑性鉴定器
Standard test method for evaluating lubricity of diesel fuels by the scuffing load ball - on - cylinder lubricity evaluator slbocle
通过磨损负载下气缸上球润滑性鉴定器评价柴油燃料润滑性的标准试验方法