储备物 meaning in English

reserve
store

Poly - 3 - hydroxybutyrate ( phb ) and other related polyhydroxyalkanoates ( phas ) are biodegradable thermoplastic polyesters stored in numerous bacteria as carbon and energy reserves and now have been regarded as ideal alternatives to traditional petroleum - derived plastics , which cause severe environmental and waste management problems
聚3 -羟基丁酸酯( poly - 3 - hydroxybutyrate ， phb )及其它类型的聚3 -羟基链烷酸酯同属于聚酯类物质，是自然界中多种细菌的碳源及能源储备物。