Add spaces: Presetfornaturalgas20mbar

Answer: Preset for natural gas 20 mbar

Add spaces: Theyearis1658andKronborgisundersiegebySwedishtroops.

Answer: The year is 1658 and Kronborg is under siege by Swedish troops.

Add spaces: FormerEnglishCatholicsweretobepacifiedwiththisVirginMaryfeature-asymbolismalsotosomedegreecorrespondingtotheIsisroleofEgyptianqueens.

Answer:
Former English Catholics were to be pacified with this Virgin Mary feature - a symbolism also to some degree corresponding to the Isis role of Egyptian queens.