操作时不允许开机时进行换档变速的翻译：When doing so does not allow change while powering on the crosspiece 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Operation does not allow variable-speed power-shift when

When doing so does not allow change while powering on the crosspiece

When operation does not permit starting when carries on shifts gears to change speed

When you open the machine is not allowed to exchange documents when variable-speed

When doing so does not allow change while powering on the crosspiece