基本解释蒸煮性能同根派生 英汉例句This experiment examined natural population varition in chemical constituents and pulping properties of Pinus massoniana Lamb . wood and their pulpability at different ages. 研究马尾松木材化学组分、制浆性能在群体中的变异及不同伐龄木材制浆造纸适应性。