Jacket can access certain temperature steam or liquid, high melting point to prevent the crystallization of liquid generated.
夹套中可通入蒸汽或一定温度的液体，防止高融点液体产生结晶。
Jacket can access certain temperature steam or liquid, high melting point to prevent the crystallization of liquid generated.
夹套中可通入蒸汽或一定温度的液体，防止高融点液体产生结晶。
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