但由于存在着物种选择、模式配置和林分结构不合理,导致大多数经济林水土保持效果较差。
However, the species choosing, mode disposition and the unreasonable forestry structure has resulted in the bad effect of water and soil conservation.
培训模式的选择是由培训效果决定的。
编程模式的选择将直接影响到语音功能的性能和效果。
To achieve voice function, programming option will directly affect system's performance and effect.
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