It comes from the constant rate pressure. In the range of 1.43 to 3.47 kg per square cm per second.
of the pressure with a fixed rate in the range of 1.43 to 3.47 kilograms per square centimeter per second,
from providing pressure constant rate in the 1.43 to 3.47 kg per ตารางเซนติเมตรต่อ seconds.