This acronym stands for the English phrase "before Christ " It is commonly used by western scholars to refer to events occuring before the hypothetical birth year (year one) of Christ (i e , 431 BC means "431 years before the birth of Christ) Dates following the birth of Christ are designated with the abbreviation AD
Balance computation summary label A system-wide water-volume balance is maintained by tracking the inflows and outflows at the boundaries of the system and comparing the sum to the change in storage within the system If the relative error in the balance, R, is larger than a fraction of 1 percent, then an error is likely
= BROADCAST B'CAST = BROADCAST BFA = BLACK-FEMALE-ADULT BFJ = BLACK-FEMALE-JUVENILE BGE = BEIGE BLK = BLACK BLU = BLUE BMA = BLACK-MALE-ADULT BMJ = BLACK-MALE-JUVENILE BO = BROKEN, "BAD ORDER", DOES NOT WORK BOL = BE ON THE LOOKOUT BOR = BOTTOM OF RAMP (NEAREST THE END OF THE RAMP) BOCC = BORDER COMMUNICATIONS CENTER BP = BORDER PATROL BRN/BRO = BROWN BTWN/BET = BETWEEN BOT = BACK ON TOP