自然常数

令人讶异的是，从来没有人成功的预测或解释任何一个自然常数。

And yet , remarkably , no one has ever successfully predicted or explained any of the constants .

这当然是真的，如果自然基本常数改变了，我们将不复存在。

Well , it 's certainly true that if the fundamental constants of nature were somehow changed , we wouldn 't be here .

自然过程将使常数随著时间递减。

Mechanisms exist that would allow the constant to decrease incrementally through time .

本文采用基于自然基下的常数乘法器，结构比较简单、易于实现的逻辑运算单元。

In this article , we adopt the techniques based on the natural foundation under constant multiplier , relatively simple structure , easy to implement logical operation unit .

根据一级动力学方程计算得出，硝基苯在淤泥介质中的自然衰减总速率常数为0.0635/h，在砂砾介质中的自然衰减总速率常数为0.0059/h。

According to first-order reaction , nitrobenzene 's total natural attenuation rates constant are 0.063 5 / h and 0.005 9 / h respective of silt medium and sand medium .