some hints: one can use X-rays, mechanical forces, polarised light/laser,

some hints: one can use X-rays, mechanical forces, polarised light/laser,

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送交者: Wood 于 2007-11-11, 05:45:40:

回答: 桉叶楮道题: give mothods can be used to disinguish salt and protein crystals? 由 Wood 于 2007-11-10, 19:12:19:

pre-made dyes for some etc