只要知道它,然后不要责备自己。
我将在第2部分更详细地介绍Source;现在只要知道它表示磁盘某个位置的文档,可以是DOM Document或其他文档。
I'll cover Source in more detail in Part 2; for now, just know that it represents a document somewhere, on disk, as a DOM document or just about anything else.
也许有人认为,只要知道了地球的大小,确定它的重量是不成问题的。
Knowing the size of our globe, one would think that there was no difficulty in determining its weight.
You just need to remember what's happening to z effective, which really tells us what's happening with all the trends, and once you know z effective, you can figure out, for example, what direction the atomic radius should be going into.
你只需要记住有效核电量的规律,实际上它会告诉我们所有的规律,只要你知道了有效核电量的规律,你就可以判断,比如,原子半径会向着哪个方向发展。
What de Broglie is saying we can know the wavelength of any matter at all, as long as we know its mass and it's velocity.
通过德布罗意所说的,只要我们知道了,它的质量和速度,我们可以知道,任何物质的波长。
If you want to know how fast it's moving at a given time, if you want to know the velocity, I just take the derivative of this answer, which is 10-10t.
如果你想知道它在给定时刻的运动有多快,如果你想知道它的速度,我只要对这个式子求导,得到10-10t
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