通过对在室内冰池进行的平台冰力模型试验中相似律、模型比尺选择、模拟冰条件以及冰力测量系统论述，证明了该项试验是可靠的和严密的。
The test is testified to be reliable and accurate by the description of scaling law of indoor ice pool platform model test, model scale choice, simulated ice conditions, and ice force measure system.
它们的生存条件就是雪和冰——改变这些条件，相当于拿走了它们的栖息地和食物。
They're built for the snow and ice -change those conditions, and you take away their habitat and their food supply.
它们的生存条件就是雪和冰——改变这些条件，相当于拿走了它们的栖息地和食物。
They're built for the snow and ice - change those conditions, and you take away their habitat and their food supply.
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