The different traditional Chinese medicine layers and linings on two sides of the inner core are respectively for fall-winter use and spring-summer use.
位于内芯两面的面料和中药药物层不同，分别为秋冬用和春夏用。
The water heating control valve is composed of a valve casing, a valve outer cover, an inner cover, a pressure spring, a valve core, a positioning device and a sealing ring.
水暖控制阀由阀壳、阀外盖、内盖、压簧、阀芯、定位装置及密封圈构成。
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