目前对飞船只进行了一些低海拔的飞行测试，平流层的测试则仅仅是由气象探测气球负载着规模缩小的模型原型机来进行的。

So far, apart from some low-altitude test flights, the only stratospheric tests have involved a scaled-down version tethered to a weather balloon.

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负载测试叫用具有“低”设定值的验证规则。

Load test invokes validation rules with a Low setting.

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实验测试结果表明：所设计的电源具有较好优良的稳压性能，以及电压纹波小、负载调整率和电压调整率低的特点。

Test results show that the designed power supply has good voltage regulation performance, and it has lower output voltage ripple, lower load adjustment rate and lower input voltage adjustment rate.

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