This is very useful for decrease on composition fluctuation range of gear steel and control on narrow fluctuation hardenability.

对减小齿轮钢的成分波动范围，保证窄淬透性的控制有重大意义。

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Many scholars claim that spending time on electronic devices doesn't necessarily mean a decrease of time for other activities.

许多学者声称，花时间在电子设备上并不一定意味着减少其他活动的时间。

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The number of poor men is on the decrease as the economy is growing.

随着经济发展，贫困人口数量正在减少。

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But animal doctor Pradeep Singhal blames the decrease in camels mainly on the influence of the outside world.

VOA: special.2009.01.13

The astronauts' decrease in bone strength measured from point six percent to five percent for each month spent on the space station.

VOA: special.2009.03.10

People are trying to find simple ways to decrease their effect on the planet.

VOA: special.2009.06.19

This is an 11.3 percent decrease sequentially and an 8.7 percent decrease on year.

FORBES: More Bad News for Dell, Hewlett-Packard and Sony

That's a drop of 27.5% on the previous quarter and a 24.5% decrease on the same period in the previous year.

BBC: Number of Scots going bust falls

Readers: have you noticed the amount of unwanted or spam-like friend requests decrease on your own account over the past month of two?

FORBES: Mark Zuckerberg: 'Friend Request Spam' Down 40%