目前对泵的压头尚不能从理论上作出精确的计算，一般用实验方法测定。

Now the pressure head of the pump is not able to make precise calculations in theory, the general use of experimental methods.

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用实验方法研究了三种新激光染料PSPI, DEASPI和HEASPI的双光子吸收荧光和上转换激射。

The properties of two photon induced fluorescence and up conversion lasing of three novel laser dyes, PSPI, DEASPI and HEASPI, have been experimentally investigated.

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