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The sprinkler is composed of sprinkler frame, sealant and glass bulb.
该喷头主要由喷头架、密封件及玻璃球组成。
youdao
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The sprinkler is composed of sprinkler frame, sealant and glass bulb.
该喷头主要由喷头架、密封件及玻璃球组成。
youdao
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The sprinkler is composed of sprinkler frame, sealant and glass bulb.
该喷头主要由喷头架、密封件及玻璃球组成。
youdao