常見例句Starts with Kepler three laws, and analyzes the conservational quantity in this kind of motion.從開普勒三定律出發(fā)，分析這類運動中的守恒量。 Throwing rice seedlings with conservational tillage measures can effectively improve ecological environment, increase the 1000-grain weight and rice yield.免耕拋秧保護性耕作措施能有效改善生態(tài)環(huán)境，增加水稻千粒重，促進水稻增產。 返回 conservational