文档介绍:化学家选择化学的理由
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate sizewith b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
搞过一段时间,大概是药房里比较好糊口的原因(想想现在医生的社会地位就知道了)。气体
化学和电化学的大师英国人戴维(Humphry Davy 1778一1829)以及第一个发现氧气的两个人之一瑞典人舍勒(Carl Wilhelm Scheele 
1742一1786)都是从医生的学徒开始干出来的。唯一的不同就是前者一直在药房里干自己的活直到死掉(这其中还有一段颇为浪漫的罗曼
史,留待后文描述),而戴维一旦意识到自己喜欢的是化学而非医学的时候,毅然的放弃了被人资助进大学学医的机会,从化学助教和实
验员做起,20年后呢?成了英国皇家学会会长!
     当然了,跟上面自然的由医转化比起来,也有比较凄惨的例子。元素周期律的发