Здрасти. Обратите внимание на перевод независимого сопричастного оборота.1. Subjecting

Здравствуйте.
Обратите внимание на перевод самостоятельного сопричастного оборота.

1. Subjecting certain crystalline materials to pressure, Pierre Curie observed that they produced an electric charge.

2. Having tested the new equipment, they agreed to sign a contract.

3. The engineer testing the device, the committee comes to see the work of it.