量子力学的本质在于它提供了一个数学框架,用于描述原子和亚原子层面上物质的行为。
我不是和想法一起工作,我是和材料一起工作。
The Government of the United States is a definite Government, confined to specified objects. It is not like the state governments, whose powers are more general.
Innovation in forestry begins with respect for nature.
The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart.