āϰিāĻĄিāĻāϏāĻĄ āϞেāĻেāϞ āĻŦা R.L āύিāϰ্āĻŖā§ (computation of the reduced level or R.L)
āϰিāĻĄিāĻāϏāĻĄ āϞেāĻেāϞ āĻŦা R.L āύিāϰ্āĻŖā§ (computation of the reduced level or R.L) āĻĒ্āϰāϤিāĻি āϏ্āĻেāĻļāύেāϰ reduced level āύিāϰ্āĻŖā§ āĻāϰাāϰ āĻāύ্āϝ āĻĻুāĻি āĻĒāĻĻ্āϧāϤি āϰā§েāĻে। āϝāĻĨা 1.āĻāϞিāĻŽেāĻļ…