Clinical materials include: gender, age, operation type, body weight, maximal flow and number of death.
记录临床资料包括：性别、年龄、手术类型、体重、体外循环最大流量和死亡例数。
The results show that soil and water conservation forest gives its maximal benefit after definite age.
研究结果表明，水土保持林要达到一定的年龄才能发挥其最大的水保效益。
The results show that soil and water conservation forest gives its maximal benefit after definite age.
研究结果表明，水土保持林要达到一定的年龄才能发挥其最大的水保效益。
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