"To be" and its functions. "To have" and its functions

8. Unless repaired, this part cannot be used in the radio set.
9. The substances investigated showed quite interesting properties.
10. When developed, the device was used for amplification of radio signals.
11. The developed technology enables us to improve the quality of articles produced.
12. The first laser was developed in 1960.
13. The methods introduced received general recognition.
14. The device used in our work is up-to-date.
15. The apparatus tested is looked upon as an experimental one.
16. When required, these data will be appli­ed in our practical work.
17. The investigation analyzed resulted in an interesting discovery.


X. State the functions of Participle I and Participle II:


1. Experiments made with radio waves have shown that the atmosphere conducting layer lies at heights above about 85 km.
2. The principle described above forms the basis of the hydrau­lic press in which pressure created within a liquid by a comparati­vely small force acting on a small piston exerts a much stronger force on another piston of considerably larger diameter.
3. Because all bodies have a constant downward acceleration produced by the pull of gravity, the equations of uniformly acce­lerated motion can be applied to any falling bodies.
5. Such water is about 11 % denser than that formed from ordi­nary hydrogen atoms and oxygen atoms and so is called "heavy water."
6. One can carry out studies of solids with neutrons analogous to those done with X-rays.
7. Rutherford's discovery of nuclear atom, further developed by Bohr, furnished a detailed explanation of the spectrum of the hydrogen atom.
8. The term “cyclotrons” covers cyclotrons of an entirely dif­ferent type from those already described.
9. A force may be defined as the action of one body on another body which changes or tends to change the motion of the body acted on.