1) understanding and retaining
理解与保持
1.
The effects of text signals on understanding and retaining English text information
文章标记对英语语篇信息理解与保持的影响
2) Measures of monitoring and conservation for soil and water
水土保持监测与治理
4) preservation theorem
保持定理
1.
Interpolation theorem and preservation theorem in first order logic have determined the existence of first order formula in accordance with certain conditions, their proofs in classical model theory are fairly long and hard to tackle.
一阶逻辑的内插定理和保持定理确定了符合某些条件的公式的存在性 ,经典模型论中对这些的证明较为繁难 。
6) Concentration and retention
集中与保持
补充资料：购买者理解价值定价法
购买者理解价值定价法：是指根据购买者对产品价值的理解来定价的方法。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条