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汉语拼音：chǐ guān

牙齿露出齿龈的部分。

齿冠 [chǐ guān]

1. 牙齿用以咀嚼的部分，外壳为珐琅质，内为齿质。

• And I've got to go back to the dentist. Again. One crown to fit, and a possible extraction, which sounds less painful than it actually is.

  我又要去看牙医了~~~一个牙齿的齿冠要修补一下，说不定可能要拔掉，真要操作起来肯定没有说说的这么轻松~~~。

• Women tend to have more cavities than men, but in terms of wear on the teeth the researchers found no difference.

  妇女牙齿的蛀洞往往较多，但是就齿冠磨耗的情形而论，两性毫无差异。

• It was just the fitting of a crown, with temporary cement.

  那东西只适合假齿冠，暂时用了黏固粉。

• The molars were very narrow shearing teeth, especially in the lower jaw, but possessed multiple cusps.

  其臼齿是非常窄的切齿，但有多个齿冠。

• And the cusps on its teeth clearly identify it not as a reptile but as a mammal.

  牠的齿冠形态明确地显示牠是哺乳类，而不是爬虫类。

• An empty space inside the crown gear communicates with the outside through an access slot.

  一个与内通过访问槽齿冠通信外空的空间。

• I've had one of my teeth crowned.

  我的一颗牙齿镶了假齿冠。

• crown on a microphone during a performance.

  他在一次表演中在麦克风上把齿冠打破了。

• RAILWAY ROLLING STOCK. BRAKE DISCS WITH CAST IRON RING.

  铁路车辆.带铸铁制齿冠的制动盘