The air will be heated by the PTC ceramic heating element in this instrument, and the volume of the air can be adjusted, too.
该仪器采用PTC陶瓷发热体进行空气加热，可以进行风量调节。
We'll now look at another ceramic which is made from mixing sand with minerals and heating to over 600 degrees Celsius.
现在我们来看看另一种陶瓷，它是由沙子和矿物质混合，再加热到600多摄氏度制成的。
Partial heat treatment in adoption of electric ceramic heater & overall heat treatment in heating treatment oven are included; and, overall heat treatment is recommended if the conditions permit.
包括采用陶瓷电加热器加热的局部热处理和采用热处理炉处理的整体热处理；条件适合的情况下优先采用整体热处理。
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