～～國民收入計算～～

根據一本"高式"Econ彩色筆記，
1) Gross Investment = Gross domestic capital formation
2) Gross Investment = Replacement investment + (Net domestic fixed capital formation + Change in stocks) = Depreciation + (Net domestic fixed capital formation + Change in stocks)
這是否顯示，
Investment = Domestic capital formation 和
Replacement investment = Depreciation？