All these methods are specially designed to be used under limited technical and economical conditions.

Such ribs are used under similar conditions as those for forged ribs.

"Therefore, it can be used for short outings under certain conditions."

Unlike the original game of Stratego, every piece has a special power which can be used under certain conditions.

And it could be used only under certain conditions.

In particular, acetylene may only be used under approved conditions.

They may be used under conditions where water pressure and temperature vary.

The investigation services are allowed to use them in prosecutions only under stringent legal conditions and subject to constitutional law.

This protocol is the one used under normal conditions.

It's my understanding that it cannot be used on Aurora except under sharply defined conditions.