เตาแก๊ส, เปลวไฟ, หัวตะเกียงก๊าซ, เตา, ก๊าซธรรมชาติ, ไฟ, เปลวไฟสีฟ้า, ก๊าซ, สีน้ำเงิน, ความร้อน, อุณหภูมิ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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