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isophthalic acid
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isophthalic acid
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isophthalic acid
间苯二甲酸
白色结晶性粉末或针状结晶。易溶于醇和冰醋酸,微溶于沸水但不溶于冷水,几乎不溶于苯和石油醚。熔点为345~348℃,相对水的密度为1.507。易燃,毒性低,能升华。又称异酞酸、1,3-苯二甲酸。
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least square approximation
least squared criterion
least square estimation
least square filtering
least square fitting
least square method
least square min-norm estimation
least squares
least squares approximation
least squares estimate
least squares estimation
least squares estimator
least squares fitting
least squares identification
least squares image matching
least squares method
least square solution
least squares principle
least squares problem
least squares solution
least time path
least universal exponent
least upper bound
least value
least-value problem
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