单词	古河
释义	古河 Koga
随便看	self-sharpening self sharpening bit self-sharpening bit self sharpening blade self-sharpening blade self-sharpening device self sharpening share self-sharpening share self-sharpen tungsten alloy self-sharping plow-share self-shattering self-shattering mechanism selfshearing gate self shiekd coil selfshield self shield self-shield self shield coil self-shield coil self-shielded self-shielded arc welding self-shielded burnable poison self-shielded flux cored wire self-shielded flux-cored wire self-shielded flux-eored welding wire