关键是备份伞在任何速度下都要有效的打开。
The bottom line is that the parachute must open correctly at any speed.
如果真的遇到主伞问题，我们需要切掉主伞，打开备份伞。
If you really have the main umbrella, we need to cut off the main umbrella, open the parachute.
另外在这个位置放置备份伞就占去了背部保护系统的安装位置。
Furthermore, the parachute in this position reduces the amount of space available to the back protection system exactly where it is needed most.
我们的整套跳伞系统里面，包含一个主伞一个备份伞和一个自动开伞器。
Our entire parachute system includes a main umbrella, a backup parachute and an automatic umbrella.
易于安装：(大家)常常会看到为了把一个备份伞装到吊带里面令人印象深刻的费劲。
Ease of mounting: Many times impressive contortions are required to stow a good parachute in a good harness with acceptable results.
现在有很多关于备份伞的讨论，对于非专业人士而言，很难分辨那些“专家”的主张。
There is much discussion about emergency parachutes, and for those who are not professional in the field, it is very difficult to sort out the claims forwarded by the 'experts'.
在法国，尤其是在滑翔伞飞行员当中，有相当数量的飞行员仍然不愿意携带备份伞飞行；
In France, especially among paragliders, a large number of pilots still do not fly with a parachute.
这个距离在很大程度上依赖于抛备份伞时候的下降速度：较低的下沉率会导致较大的打开距离。
This opening distance largely depends on your sink-rate at time of deployment: a lower sink-rate usually requires a greater opening distance.
备份伞的安装位置，备份伞手柄的形状，备份伞手柄到备份伞包之间连接带的长度都非常重要。
The positioning of the parachute system in paragliding, the shape of the deployment handle and the length of its connecting strap to its pod are very important.
让那些曾经觉得不带备份伞飞行是很酷的飞行员认识到不带备份伞飞行是很可怜的傻瓜干的事情。
This way, new pilots learn to regard these items of safety equipment as indispensable, and those who fly without, instead of being seen as 'cool', should come to be regarded as poor fools.
与其强制所有飞行员携带备份伞（其实也没啥用，因为几乎不具可实施性），不如逐渐改变飞行员的观念。
Rather than make it mandatory to fly with a parachute (which is quite useless because it's almost impossible to enforce), it's more important to change the outlook of pilots.
没有误开的可能性：误开备份伞常常发生，在我看来，没有理由让一个安全设备在日常的飞行中发生问题。
No risk of accidental deployment: Unintentional deployments are too frequent, and in my opinion, it is unacceptable to have safety equipment which can cause problems during a routine flight.
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.
而对于ACPUL认证而言，即使是一个体重较小的飞行员也不会买到更小的备份伞，因为小的型号无法通过ACPUL的认证。
With the ACPUL certification, even if one is very light, he cannot purchase a smaller parachute to reduce weight and encumbrance because the smaller size cannot be certified.
而对于ACPUL认证而言，即使是一个体重较小的飞行员也不会买到更小的备份伞，因为小的型号无法通过ACPUL的认证。
With the ACPUL certification, even if one is very light, he cannot purchase a smaller parachute to reduce weight and encumbrance because the smaller size cannot be certified.
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