位置测量越精确,动量测量就越不精确,反之亦然。
"Every character is a world, and every world is a question."
The one element which is of first importance in scientific management is the task idea.
A book is a version of the world. If you do not like it, ignore it; or offer your own version in return.
The city is a shared house, and we are all its architects.