これの和訳を教えてください。
Recently, Nakagawa et al. have numerically studied the planetary growth and shown that the growth times of the Earth and Jupiter are orders 10^6～10~7 yrs and 10^7～10^8 yrs, respectively. But, for the case of Neptune, a very long time, which is comparable to or longer than the age of the solar system, is needed for the growth ( these growth times, nevertheless, are shorter by a factor of 10 or 100 than those obtained by Safronov). As they have pointed out for themselves, their results are not always final but tentative because in their calculation some assumptions and simplifications are made for the sake of convenience; one of these is that for the rates of collision and of gravitational scattering due to the mutual encounters between planetesimals, formulae in a free space (i.e., without the influence of the solar gravity) are used.
補足
大腸でのステント留置の話です。 ステント留置術で必要となる器具・用具等の列挙部分の1項目です。 狭窄部のマーキングに関する文はこれのみです。