NASAのテクニカルライティング 12 ーthere is構文とit ... that構文は避けましょうー

NASAのテクニカルライティングのガイドラインによると、there is構文は冗長で具体的になにを指すのか曖昧なので避けるべきとのこと。

  • [bad] There are three distinct flow characteristics in these photographs.
  • [good] These photographs shows three distinct flow characteristics.

It ... that構文も同様に冗長で、別の簡潔な表現にできることが多いとのこと。

  • [bad] It might be expected that there would be some flow separation.
  • [good] Some flow separation might be expected.

  • [bad] It appears that the flow field over the nozzles in complex.
  • [good] The flow field over the nozzles appears to be complex.

  • [bad] It was shown in reference 1 that ...
  • [good] Reference 1 showed that ...