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。
2
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。
3
Using indirect matching method, the shock solutions of shock wave in an interval are constructed.