refiner

精炼者, 精炼机英释中释nRefiners are people or organizations that refine substances such as oil or sugar in order to sell them

1 grain refiner,晶粒细化剂

2 oil refiner,炼油器，净油器

1 The refiner defined a definite confine with her fine finger..提炼者用她精细的手指定义了一个明确的界限。