介绍了高档发动机油专用标志的含义和几种带专用标志的高档发动机油。
The meaning of high grade engine oil special mark and high grade engine oils with special mark are introduced.
本发明涉及一种内燃机油添加剂，尤其涉及一种船舶专用的内燃机油添加剂。
The invention relates to an internal combustion engine oil additive, in particular to an internal combustion engine oil additive especially for ship.
本发明涉及一种内燃机油添加剂，尤其涉及一种船舶专用的内燃机油添加剂。
The invention relates to an internal combustion engine oil additive, in particular to an internal combustion engine oil additive especially for ship.
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