Output rise and fall times are TTL compatible and independent of pulse duration.

输出上升和下降时间ttl兼容和脉冲持续时间无关。

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Other features include a short propagation delay of 28 ns (typical), fast rise and fall times, and supply rail under-voltage lockout.

其他功能还包括28纳秒(典型值)，快速的上升和下降时间很短的传播延迟，以及电源轨欠压锁定。

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showed that if global emissions do not peak and begin to fall by 2020, keeping the global average temperature rise since pre-industrial times below 2C will be difficult.

《自然—气候变化》期刊周末发表的一项研究表明，如果全球排放到2020年没有达到峰值并开始下降，将很难使全球平均气温自前工业时代以来上升幅度保持在2度以内。

youdao

Like council tax on homes, the bills fail to adjust downwards when you fall on hard times, and nor do they rise when income booms.

BBC: Business takes a tax hit

These shares rise and fall as the price of gold does, but they tend to be three times as volatile.

FORBES: Magazine Article