桁 - beam, girder, spar

column; beam; girder; crossbeam; spar; yard

main girder

cancellation of significant digits

well curb consisting of wooden beams crossed at the ends

one digit; one column; the "ones" column

yardarm

an order of magnitude higher; off by a digit; in a different league; unbelievable; incomparable; unimaginable

carry (of digit, bit, etc.)

complete carry

incredible; extraordinary; exceptional; phenomenal

two-digit number; "tens" column; two digits; double figures

last two figures of a number