The conventional method for determining the first crack point of concrete in direct tension is greatly dependent on the judgment of idvidual.
目前采用的确定混凝土拉伸断裂初裂点的方法，受人为因素影响大。
A method of determining trace bromate in drinking water by an ion chromatograph was established with direct injection and conductivity detection but without sample pre-treatment.
建立了一种无需样品前处理、直接进样、电导检测饮用水中痕量溴酸盐的离子色谱分析方法。
A method of determining trace bromate in drinking water by an ion chromatograph was established with direct injection and conductivity detection but without sample pre-treatment.
建立了一种无需样品前处理、直接进样、电导检测饮用水中痕量溴酸盐的离子色谱分析方法。
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