The greatest friend of truth is time, her greatest enemy is prejudice, and her constant companion is humility---C. C. Colton, English cleric and collector.
真相最伟大的朋友是时间，最大的敌人是偏见，永远的伴侣是谦卑---C.C。科尔顿，英国牧师和收藏家。
Expressions of heat removal factor, efficient factor and time constant of the four types of cavity receiver have been deduced and test for trough solar collector system has been set up.
推导出了四种结构的热迁移因子、效率因子和时间常数等表达式，搭建了槽式太阳能集热器系统，进行了试验测试和验证。
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