Fortunately the PSDS does get some donations, which helps us sustain some of our programming.
不过幸运的是PSDS确实得到了一些捐赠，这些捐赠帮助我们维持了我们的运转。
The positioning errors at the four corners of the PSDs are affected most.
其对PSD四个角位置附近定位误差的影响最大。
The positioning errors at the four corners of the PSDs are affected most.
其对PSD四个角位置附近定位误差的影响最大。
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