What should be considered for optional high frequency impedance control?

对于可选的高频阻抗控制应该考虑什么？

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Optional high flower is aspersed, sprinkler control pneumatic valve, 20 metres green reel, etc.

选装高位花洒、洒水控制气动总阀、20米绿化卷盘等。

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Optional high-precision electronic scales, weighing data automatic transmission, realize intelligent adjustment of measurement.

可选配高精度电子秤，灌装称量后数据自动传输，实现计量智能调节。

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The IdeaCentre A730 features an optional high-resolution display (2, 560 x 1, 440) measuring 27 inches diagonal.

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Available with an optional high-resolution full HD display (1920 x 1080), and a separate 10-key keypad, the LIFEBOOK E752 helps businesses reduce costs and improve efficiency.

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Most intriguing, however, was the "optional high performance integrated graphics" that could reportedly be included on the same processor die, which could certainly prove interesting if crammed into, say, a UMPC.

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