Прочтите, перепишите предложения, переведите на русский язык.1. To repeat the words

Прочтите, перепишите предложения, переведите на русский язык.
1. To repeat the words is very useful.
2. To understand this phenomenon well one must know the structure of the
material.
3. The scientist wanted to find new products of this substance.
4. The apparatus to be used in our work was constructed in our laboratory.
5. In order to liquity a gas at a temperature below its critical temperature, it is
practically necessary only to compress the gas.