conservational的用法和樣例：
例句
- Starts with Kepler three laws, and analyzes the conservational quantity in this kind of motion.
從開(kāi)普勒三定律出發(fā)，分析這類(lèi)運動(dòng)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(jìn)水稻增產(chǎn)。
