The Mach number is used to evaluate whether the incompressibility can be included , otherwise the effects of compressibility must be accepted . The Mach number is used to evaluate whether the incompressibility can be included , otherwise the effects of compressibility must be assumed .
Nombor Mach digunakan untuk menilai sama ada ketidakmampatan boleh dimasukkan, jika tidak, kesan mampatan mesti diterima. Nombor Mach digunakan untuk menilai sama ada ketidakmampatan boleh dimasukkan, jika tidak, kesan mampatan mesti diandaikan.