Complex sentence: Their ImagePath definition is of the form% SystemRoot%\\ System32\\ svchost.exe-k netsvcs: all the services sharing the same SvcHost process specify the same parameter, having a single entry in the SCM's database.
Split into simpler sentences: Their ImagePath definition is of the form% SystemRoot%\\ System32\\ svchost.exe-k (service group; i.e. netsvcs). Services sharing the same SvcHost process specify the same parameter, having a single entry in the SCM's database.