DVM modules also have low parts count, and you can implement them using off-the-shelf components.

DVM模块使用器件少，可使用有现货供应的器件实现。

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Simplicity is of the essence since the low parts count implementation is invariably cheaper and more reliable.

简单极为重要，因为用较少元器件实现（的电路）肯定更便宜也更可靠。

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But, despite its merits, the traditional single-ended forward converter has some shortcomings, such as simple circuit, low parts count, low output ripple, etc, it also has some shortcomings.

尽管传统的单端正激变换器有诸多优点，如电路结构简单、元件数量少、输出纹波小等，但是也有其缺点。

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Although the seasonal equinoxes and solstices seem to divide the year into four equal parts, when you count the days of what we officially call winter, spring, summer and fall, each season is different, says Bing Quock, acting chairman of the Morrison Planetarium at the California Academy of Sciences.

NPR: Not All Seasons Are Created Equal

It is for this reason that you need a device, such as Dr Shields's, which can detect and count individual photons as they come out of different parts of the beam-splitter.

ECONOMIST: Quantum information technology