The end becomes flat when you press it upwards.

最终变得平坦，当您按下向上。

youdao

The results show that the mass loss rate increases with increasing the vacuum thermal cycles, and becomes flat after 48 cycles;

试验结果表明，随真空热循环次数的增加，质损率增大，并经约48次真空热循环后趋于平缓；

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The relationship between maximum local damage variable at the center of the band and flow tensile stress becomes flat as softening modulus increases or the elastic modulus decreases.

增加降模量或降低弹性模量，局部损伤变量最大值-流动应力的关系趋于平直。

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However,snow can become hard and flat as it becomes older or if there have been strong winds.

VOA: special.2010.01.05

BBC, the harder it becomes to justify the flat-rate licence fee (in all but name, a regressive tax) levied on all the country's television owners to pay for the corporation.

ECONOMIST: Digital follies

At ten grand a flat-screen becomes more of a status symbol than anything.

FORBES: There's Just One Problem With the New LG OLED TV

Then a silence, and into that silence, a sharp sigh or a sound like a whistle through a keyhole: the body exsanguinates, and its flat little presence becomes a puddle of gore.

NEWYORKER: Invitation to a Beheading