He was demonstrating hydrogen gas production at milliamp and kilovolt levels.
他示范并千伏各级氢气产量为毫安。
One of them combines lithium manganese oxide with other ions, and operates at about three to five volts with a charge capacity of 200 milliamp hours per gram.
平面能源正在研发三种不同的电池化学配方。 其中之一是把锂锰氧化物与其他离子化合，充电电压三到五伏，容量200毫安时每克。
While Milliamp does offer tools and instructions for do-it-yourself battery replacement for an iPod, the company says that replacing the battery in an iPhone is simply too difficult to try at home.
但是，按照Milliamp有限公司的说法，更换iPhone电池，是件不该去尝试的工作，Milliamp是家与ifixit.com竞争的iPhone部件更换公司。 尽管Milliamp确实为自己更换iPod电池提供工具和说明，但是，它表示，试着在家里更换iPhone电池还是太困难了。
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