随着资产价格垂直下落和经济收缩，通缩将很快成为更大的担忧。
With asset prices plummeting and economies shrinking, deflation will soon be a bigger worry.
现在我们都知道，如果没有空气的阻力，重的物体和轻的物体垂直下落的速度是一样的。
As we know now, heavy objects and light objects fall at the same speed unless air holds them back.
而DHV要求在带着模拟飞行员必须在60米的垂直下落距离内打开，下抛时备份伞是同假人处于同一高度并列放下。
DHV requires the parachute to open in less than 60 vertical meters when the load (simulating the pilot) and the parachute are dropped in free fall, side by side, at the same time.
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