Coldshots develop from low casting temperature, and dirt spots result from pickup of sand or slag by molten metal.
较低的铸造温度会形成冷疤,熔化金属出现的沙粒或炉渣的累积会导致污点。
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The robot, called Mr Asahi, began his international tour at Selfridges in London, serving up shots of ice-cold Asahi beer to intrigued customers - with a robotic smile.