Please capitalize where necessary: however, there were not enough highly trained american scientists and so many recent immigrants were needed to fill the gap.
A: However, there were not enough highly trained American scientists and so many recent immigrants were needed to fill the gap.

Please capitalize where necessary: raid recovery - recover data from raid hard drives
A: RAID Recovery - Recover data from RAID hard drives

Please capitalize where necessary: can also be applied on the skin does not wash, do not require rinsing.
A: Can also be applied on the skin does not wash, do not require rinsing.

Please capitalize where necessary: hydraulic systems powered using hydraulic fluid power motors (excl. those for civil aircraft of subheading 8412.29.10 and hydraulic power engines and motors, linear acting)
A:
Hydraulic systems powered using hydraulic fluid power motors (excl. those for civil aircraft of subheading 8412.29.10 and hydraulic power engines and motors, linear acting)