Clouds with extremely cool water are mixed with man-made ice crystals, such as silver iodide and metaldehyde crystals.
VOA: special.2011.01.11
The partial pressure of the water, of gaseous water above that equilibrium of ice and water is not one bar, it's much less.
哪里错了吗?,问题在于,冰水混合物上方的,大气中水蒸气的分压,不是一个大气压。
There's the water phase, there's the ice cube is the solid phase, and there's some water, gas, vapor, and that's one bar.
里面放一块冰,这是固态;,于是我们得到了水,冰和水蒸气三态共存的点。
The water under the ice is very salty and contains many kinds of minerals including iron.
VOA: special.2009.06.03
You take a glass of ice water and set it down.
这是液态;
Ice cold water travels down the mountains and forms several rivers the Gila River, the Green River, the Little Colorado, the San Juan, the Virgin and the Gunnison rivers.
VOA: special.2009.08.12
You need to know if it's an equilibrium, and you also need to know how many components you have in your system So, a glass of ice water with an ice cube in it, which is a heterogeneous system, has only one component, which is water, H2O.
要知道它是不是平衡的,你还需要知道,你的系统中有多少组分,一杯放了冰块的水,虽然它是个非均匀系统,但它只有一种组分,那就是水。
The ice broke and John sank under the water.
VOA: special.2010.06.26
But the snow does melt. Ice cold water travels down the mountains and forms several rivers -- the Gila River,the Green River, the Little Colorado,the San Juan, the Virgin and the Gunnison Rivers.
VOA: special.2010.10.27
Warmer temperatures cause water to expand,a phenomenon called thermal expansion, and cause glaciers and polar ice caps to melt.
VOA: standard.2009.11.09
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