Sentence Examples

  • From Vines T sf-Book of Botany, by permission.)
  • Several halogen compounds of sulphur are known, the most stable of which is sulphur fluoride, SF 6, which was first prepared by H.
  • They counselled retreat, but having heard them all he replied, in substance: " If we leave here at all we may as well retire to Strassburg, for unless the enemy is held by the threat Sf further operations he will be free to strike at our communications and has a shorter distance to go.
  • Cam sf, The sub-frontal median sclerite.
  • If we inquire what is the greatest admissible longitudinal aberration (Sf) in an object-glass according to the above rule, we find Sf =Xa 2 (2), a being the angular semi-aperture.

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