SELECT COUNT(moment_of_inertia_in_torsion__j___cm_4__) FROM table_2071644_1 WHERE beam_height__mm_ = 120
Berapa momen inersia dalam torsion (j) cm4) untuk tinggi balok (mm) 120 ?? =
CREATE TABLE table_2071644_1 (moment_of_inertia_in_torsion__j___cm_4__ VARCHAR, beam_height__mm_ VARCHAR)