但这一切仅仅是人类必须更加了解自己。比起钢或金的纯度测量而言，对人类情感与行为意义的衡量更是难上加难。
The human emotions and the meaning of human behavior present difficulties in measurement much greater than those encountered in learning to measure steel or gold.
研究人员本月在《地质学》杂志上报道说：这样形成的金比原来的金颗粒纯度要高得多，因而对矿工的吸引力也要大得多，原来的金颗粒含有银和汞。
This form of gold is much purer than the original gold grains, which also contain silver and mercury, and is thus much more attractive to miners, the team reports this month in Geology.
介绍了金品纯度的测定方法，推导出了比较实用的纯度计算、杂质估算和温度影响等几个表达式。
A method of quality apprarisal for gold products was introduced and several useful formulas for purity calculation, impurity element-estimation and temperature effects have been also deduced.
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