【摘要】 综述了聚醚及其改性物和酯类化合物作为冷冻机基础油的生物降解性，添加剂对生物降解性的影响，以及各种评价生物降解性的试验方法。更多还原

【Abstract】 It is important to look for environment protecting refrigeration lubricating oils,they can be biodegraded by the action of living organisms.The biodegradation of some polyethers and esters and the influence of additives on the biodegradation are reviewed.Various test methods are discussed.更多还原