Other options, such as white composite or porcelain filling materials, look better and are preferred by many patients, he says.

白色的陶瓷或混合材料，外观更好，是目前很多患者的首选。

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The fuse pipe is the main part of fuse, it is made by installing the fuse wire in the porcelain pipe, filling the quartz sand in the porcelain pipe and sealing to-ends of pipe.

熔断管是熔断器的主要部件，它是由熔丝装在瓷管中，并在瓷管中充填石英砂，两端密封而成。

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According to the difficulties of water well repairing and gravel-filling for horizontal well, porcelain granule pre-coated well screen was developed based on a lot of laboratory tests.

针对水井修井和水平井成井填砾困难的特点，通过大量室内试验，研制了陶粒贴砾过滤器。

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