см. тж. с целью ; чтобы убедиться в том, что
• More extensive research is necessary before the significance of these findings can be understood.
• Something more is needed if we are to understand how the Earth came to possess its core of iron.
• A population inversion must be produced if laser action is to occur.
• For energy to be absorbed radiation of a frequency ... must be supplied.
• To ensure that ... remain constant, the electrode solution is usually a buffer.
• Careful maintenance is essential if the machine is to give service and reliability of which it is capable.
• All components must be accurately aligned in order that the pellet ( should ) be impacted symmetrically.
• In order that g falls to 0.99 g, y must be 20 miles.
• So that the worm and roller will continue to mesh, the contour of the underside of the worm gear is an arc with ...
• The rod should be made of mild steel so that it will bend easily.
• For the laser approach to succeed the fuel must be compressed to 10,000 times normal liquid density.
• In order for the switching system to work properly, the operations of the system must be synchronized.