-
So someone returning from mass displacement, even though I'm sure are thrilled to be going home, they bring with them all sorts of challenges upon their return."
VOA: special.2011.07.06
-
And I will go even further and will predict what its atomic mass is.
我会在深入,还会预测它的原子质量是多少。
-
With some degree of confidence, I'm working with a reliable spring and then I will get the mass of the elephant.
这时我就对弹簧有信心了,我用的是一个可靠的弹簧,我能测出大象的质量
-
The lawyers,the opposition, the civil society is going to be in the streets, although they [i.e.,authorities in Pakistan have started mass arrests.
VOA: standard.2009.03.11
-
And there are some early indications that the mass actually increases after each reorganization.Now I will send you on the weekend with a chemistry joke.
还有一些早期的标志,质量事实上上升了,在每个重组之后，现在,周末我会给你们发化学笑话。
-
The idea of working in an office, pushing papers 70 to 80 hours a week, although as lucrative as it might be, wasn't something I felt I will be really using my own personal skill set to benefit people on a mass level.
在办公室里一周做，70到80小时的琐碎工作，虽然会很赚钱，但是这并不是,我能真正用自己的能力,去造福大众的工作。
-
I mean that's obvious. The mass, if you double the amount of stuff the mass will double.
这是显然的，还有质量，如果你把系统中物质的,数量增加一倍，质量也会增加一倍。
-
Blood I will mass and cause bones to be.
我要将血液集合起来，把它做成骨头。
-
I want to raise the stakes beyond using Mass. Ave.
如果其中的利害关系，超越使用麻省的路。
-
Further down the line, for example, in the blastocyst I talked about before, we could obtain cells from this inner cell mass or this cluster of cells that becomes the embryo.
沿着这条线看,举个例子,就是我之前提到过的囊胚,我们可以取一些内细胞群的细胞,这种能成为胚胎的细胞群
-
I know that if the second mass moved faster than the first one, then the picture is completely wrong.
因为我知道如果第二个物体比第一个运动更快,那么受力图就肯定不是这样了
-
Now I can measure that, because I pull it by one centimeter and I find the acceleration it exerts on a known mass.
现在就能测量这个力了,因为把弹簧拉伸 1 厘米,我就知道它让一个质量已知的物体产生的加速度
-
If I pull the one kilogram mass and I let it go, it does something, some acceleration.
如果我拉 1 千克重的物体并松手,就会获得一个加速度
-
I mean, the atom has a tiny mass, too, but what we are saying is compared to the totaled atomic mass, the mass of the electron is tiny.
我的意思是，原子的质量也很小，但是我们说的是,和整个原子质量相比，电子的质量是很小的。
-
And, I mean literally, mass, not mole number.
我想罗嗦一下，质量，而不是摩尔数。
-
That quantity in parenthesis, I have a mass which is a positive number. Something raised Something raised to the fourth power has got to be positive.
顺便说一句,质量这个量是个正数,四次方的值,肯定是正数。
-
He goes back and redoes the calculation, only in this case he says what I am going to do is I am going to redo the calculation for helium, but I am going to consider not just the mass of the electron but the reduced mass of the system.
他回去重新做了计算，仅在这种情况下他才会说说我将要,为氦重做计算，但我认为,不只是电子的质量,还有系统质量的减少量。
-
Now, I tie this one kilogram mass to it and let it go.
现在,我把这个 1 千克重的物体系上,并松开手
-
I already showed you the atomic mass.
我已经向你们展示了原子质量了。
-
I'm telling you, "What's the mass of the elephant?"
我要问你,"大象的质量是多少"
-
Then, I bring the elephant and I pull the spring by the same amount and I find the acceleration of the elephant and the denominator is obviously the mass of the elephant.
然后我再找来大象,用相同的力去拉弹簧,大象就具有了加速度,很明显,分母就是大象的质量
-
On the eleventh time, I pull the mass.
第十一次的时候,我把物体拿掉
-
For example, how do I know that when I pull the spring the first time for the mass, it exerted the same force when I pulled the spring the second time for the elephant?
例如 怎样才能知道,第一次连着物体拉弹簧时,产生的力和,第二次连着大象拉弹簧时产生的力是相等的呢
-
Mass and energy -- I'm an open system, right?
质量和能量--我是个开系，对吧？
-
What I am going to do next day is go into the larger stoichiometry and understand the principles of mass balance and reactivity But before you go,hold it,I don't want you racing off.
下堂课我要做的是,讨论化学计量学，和,质量平衡很反应定律,但在下课之前，我不希望你们这么快走。
-
That's how by either balancing the unknown force with a known force or by simply measuring the acceleration as I fall towards this podium and multiplying by mass, you can find the force that exerts on me.
我们既可以让未知力与已知力平衡,也可以只测量我冲向讲台时加速度的大小,再与我的质量相乘,都能求出作用在我身上的力的大小
-
And then I convert that to mass, and that gives me 24.7 kg of titanium.
换算成质量，就是24。7kg的钛。
应用推荐