做胃镜检查用碳酸钡还是硫酸钡,为什么?(化学)
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![做胃镜检查用碳酸钡还是硫酸钡,为什么?(化学)](/uploads/image/z/3151391-23-1.jpg?t=%E5%81%9A%E8%83%83%E9%95%9C%E6%A3%80%E6%9F%A5%E7%94%A8%E7%A2%B3%E9%85%B8%E9%92%A1%E8%BF%98%E6%98%AF%E7%A1%AB%E9%85%B8%E9%92%A1%2C%E4%B8%BA%E4%BB%80%E4%B9%88%3F%28%E5%8C%96%E5%AD%A6%29)
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