单词：curving of castings
铸造圆角(防止铸件冷却时裂隙)
单词：curving of castings 相关文章
Of course animals also make noises they can cry out when they feel pain and make warning calls when danger threatens, 当然动物在感到疼痛时也会叫喊，在有危险时发出报警呼喊声， but they don't have names for things as human b
发表于:2019-01-01 / 阅读(38) / 评论(0)
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