โลหะ, เจาะ, เครื่องมือ, ด้าย, เครื่องตัดด้าย, การขุดเจาะ, อุตสาหกรรม, การผลิต
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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