你需要食物，特别是甜食和粘性食物，你口腔中的细菌就会利用它产酸并损害牙釉质（牙齿表面光亮的那一层）。

You need food, particularly sweet and sticky food, for the bacteria in your mouth to produce acids that will attack the tooth enamel (outer surface of the tooth).

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粘性流场的模式成立，在电机，增加传热推进剂表面通过更大的传质。

Viscous flow patterns are set up in the motor, increasing heat transfer to the propellant surface through greater mass transfer.

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爱马斯手套的抓握力并不完全来自于（手套的）纹理。（也来自于）制造商改变的最后一道工艺，在氯化过程中通过应用轻度氯洗来保证（手套）表面的粘性。

The grip on latex gloves is not entirely from texture. Instead, manufacturers alter the finishing process by using less chlorine during chlorination to maintain surface tackiness.

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