fresh-oil lubrication with metering pump（计量泵新鲜油润滑）是什么意思？音标发音+图解场景

计量泵新鲜油润滑 /jì liàng bèng xīn xiān yóu rùn huá/ n

English: fresh-oil lubrication with metering pump · 计量泵新鲜油润滑