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汉语拼音：wù lǐ biàn huà

没有生成其他物质的变化。在该变化中，只是物质的物理性质发生了变化，而化学组成和化学性质均无改变。如水蒸发或结冰。

• HHMI researchers have now learned that this pairing causes a physical change in the shape of the kinase domain.

  霍华德•休斯医学研究所的研究人员现已经得知，这种配对导致了激酶结构域形状上的物理变化。

• At least you have been warned as to what to expect, if by chance you find that you are in areas that will be subject to physical changes.

  至少你们已被警告过需要去期待什麽，如果是随机的话，你就会发现自己处在受制于物理变化的情况中。

• the maintenance of a certain quantities unchanged during chemical reactions or physical transformations.

  （物理学）在化学反应或物理变化中，数量不变的原则。

• You could hardly get along from day to day without physical changes. such changes are always going on.

  你的每一天都离不开物理变化，这种变化不断地出现。

• Excessive current through the contacts during testing can cause a physical change in the contact area on a microscopic level.

  在测试时流过接点的电流过大也能使接触区域发生细微的物理变化。

• Physical changes occurring substances in the course of a certain chemical changes have taken place.

  物质发生物理变化的过程中一定发生了化学变化。

• In the case of In the case of a physical change, no news substance is formed.

  就物理变化来说，不会产生新的物质。

• There is no awareness of time or physical change because man is not interacting with the frequency of what is happening on Earth.

  由于人无法跟这样的环境能量交互因此人没有时间和物理变化上的觉察。

• One theory holds that memory traces or fragments are distributed throughout the brain as biophysical or biochemical changes called engrams.

  一种被称为记忆印记的理论认为，记忆的痕迹或碎片以生物物理变化或生物化学变化的形式分布于整个大脑。