p*6
2 楼
气球表面也是有小孔的。
b*r
8 楼
It is because that the balloon is made of rubber, which is permeable to the
gas molecules inside. Therefore, no matter how tight you seal the end of the
balloon, gas molecules will permeate through the thin rubber wall from the
interior of the balloon over time and it will look like that the balloon is
"跑气".
The permeation through the rubber wall is a slow process and therefore you
will not observe the "跑气" until you wait for a sufficiently long time. The
time will depend on the material and thickness of the rubber, the
temperature, the pressure in the balloon and the type of gas in the balloon.
It follows the same mechanism that you need to pump air into tires of your
car every couple of months. The major difference is that the rubber of your
tire is much more thicker and therefore it will take a much longer time
before you can observe anything different.
And a correction, the rubber is dense and there are no pores...
【在 s*******e 的大作中提到】
: 是不是我札的不紧的原因?
gas molecules inside. Therefore, no matter how tight you seal the end of the
balloon, gas molecules will permeate through the thin rubber wall from the
interior of the balloon over time and it will look like that the balloon is
"跑气".
The permeation through the rubber wall is a slow process and therefore you
will not observe the "跑气" until you wait for a sufficiently long time. The
time will depend on the material and thickness of the rubber, the
temperature, the pressure in the balloon and the type of gas in the balloon.
It follows the same mechanism that you need to pump air into tires of your
car every couple of months. The major difference is that the rubber of your
tire is much more thicker and therefore it will take a much longer time
before you can observe anything different.
And a correction, the rubber is dense and there are no pores...
【在 s*******e 的大作中提到】
: 是不是我札的不紧的原因?
w*a
9 楼
再也不敢用避孕套了。
the
the
the
is
The
balloon.
【在 b******r 的大作中提到】
: It is because that the balloon is made of rubber, which is permeable to the
: gas molecules inside. Therefore, no matter how tight you seal the end of the
: balloon, gas molecules will permeate through the thin rubber wall from the
: interior of the balloon over time and it will look like that the balloon is
: "跑气".
: The permeation through the rubber wall is a slow process and therefore you
: will not observe the "跑气" until you wait for a sufficiently long time. The
: time will depend on the material and thickness of the rubber, the
: temperature, the pressure in the balloon and the type of gas in the balloon.
: It follows the same mechanism that you need to pump air into tires of your
the
the
the
is
The
balloon.
【在 b******r 的大作中提到】
: It is because that the balloon is made of rubber, which is permeable to the
: gas molecules inside. Therefore, no matter how tight you seal the end of the
: balloon, gas molecules will permeate through the thin rubber wall from the
: interior of the balloon over time and it will look like that the balloon is
: "跑气".
: The permeation through the rubber wall is a slow process and therefore you
: will not observe the "跑气" until you wait for a sufficiently long time. The
: time will depend on the material and thickness of the rubber, the
: temperature, the pressure in the balloon and the type of gas in the balloon.
: It follows the same mechanism that you need to pump air into tires of your
s*e
11 楼
也就是说两个molecules 不能零距离接触
那么精子是如何和卵子结合成为受精卵的哪?
the
the
the
is
The
balloon.
【在 b******r 的大作中提到】
: It is because that the balloon is made of rubber, which is permeable to the
: gas molecules inside. Therefore, no matter how tight you seal the end of the
: balloon, gas molecules will permeate through the thin rubber wall from the
: interior of the balloon over time and it will look like that the balloon is
: "跑气".
: The permeation through the rubber wall is a slow process and therefore you
: will not observe the "跑气" until you wait for a sufficiently long time. The
: time will depend on the material and thickness of the rubber, the
: temperature, the pressure in the balloon and the type of gas in the balloon.
: It follows the same mechanism that you need to pump air into tires of your
那么精子是如何和卵子结合成为受精卵的哪?
the
the
the
is
The
balloon.
【在 b******r 的大作中提到】
: It is because that the balloon is made of rubber, which is permeable to the
: gas molecules inside. Therefore, no matter how tight you seal the end of the
: balloon, gas molecules will permeate through the thin rubber wall from the
: interior of the balloon over time and it will look like that the balloon is
: "跑气".
: The permeation through the rubber wall is a slow process and therefore you
: will not observe the "跑气" until you wait for a sufficiently long time. The
: time will depend on the material and thickness of the rubber, the
: temperature, the pressure in the balloon and the type of gas in the balloon.
: It follows the same mechanism that you need to pump air into tires of your
f*n
15 楼
S*l
16 楼
病毒还是能够穿过避孕套,所以即使带套也还是有可能得AIDS
p*y
20 楼
好大一个坑
g*9
22 楼
有些厚道的店员会往橡胶气球里挤点貌似凡士林的东西,冲得好的可以一周多。
the
the
the
is
The
balloon.
【在 b******r 的大作中提到】
: It is because that the balloon is made of rubber, which is permeable to the
: gas molecules inside. Therefore, no matter how tight you seal the end of the
: balloon, gas molecules will permeate through the thin rubber wall from the
: interior of the balloon over time and it will look like that the balloon is
: "跑气".
: The permeation through the rubber wall is a slow process and therefore you
: will not observe the "跑气" until you wait for a sufficiently long time. The
: time will depend on the material and thickness of the rubber, the
: temperature, the pressure in the balloon and the type of gas in the balloon.
: It follows the same mechanism that you need to pump air into tires of your
the
the
the
is
The
balloon.
【在 b******r 的大作中提到】
: It is because that the balloon is made of rubber, which is permeable to the
: gas molecules inside. Therefore, no matter how tight you seal the end of the
: balloon, gas molecules will permeate through the thin rubber wall from the
: interior of the balloon over time and it will look like that the balloon is
: "跑气".
: The permeation through the rubber wall is a slow process and therefore you
: will not observe the "跑气" until you wait for a sufficiently long time. The
: time will depend on the material and thickness of the rubber, the
: temperature, the pressure in the balloon and the type of gas in the balloon.
: It follows the same mechanism that you need to pump air into tires of your
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