The polarographic catalytic wave method for the indirect determination of sulfate radical was introduced. The influence factors and the experimental conditions had been discussed.
介绍了一种用极谱催化波间接测定硫酸根的方法，讨论了实验条件和干扰因素。
At present, the observation of PSR1913+16 is the only available proof of gravitational wave, even though merely an indirect evidence it is.
目前为止，对PSR1913+16致密双星辐射阻尼效应的观测，仍然是引力波存在性的唯一间接证据。
Using indirect matching method, the shock solutions of shock wave in an interval are constructed.
利用间接匹配法，构造出激波在区间内的激波解。
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