The grape wine and the Pu 'er tea are the same, is also fastidious about the quality.
葡萄酒和普洱茶一样，也讲究品质的。
The same quality of tea, such as water are different tea brewing techniques of different or mixed, bubbles out of tea have different effects.
异样质量的茶叶，如用水不同、茶具不同或冲泡技术不一，泡出的茶汤会有不同的效果。
Comparing with traditional stable resonator high-power TEA CO2 laser, it is always the key point to improve the optical beam quality as the same time guarantee the power of laser.
相比于传统稳腔高功率TEA CO2激光器，如何在不降低功率的基础上，改善其光束质量一直研究者关心的问题。
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