单词：pre-condition
pre-condition的用法和样例：
例句
- The spectral condition number is a useful indicator of the quality of a preconditioner.谱条件数是反映预处理因子性态是否良好的一个有效指标。
- It is also indicated that pretreatment of rice hull powder under acid condition is helpful to improve its thermostability.酸性条件下预处理稻壳粉有利于提高其热稳定性。
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