根: root数: frequently; repeatedly发根数: number of roots平根数: mean element重根数: multiplicity贝塞耳根数: besselian elements不尽根数: surd number布莱根数: bulygen number单丝根数: number of filaments根,根号,根数,根式: radical根式;根号;根数: radical轨道根数: elements of an orbit; elements of orbit; orbital elements交食根数: element of eclipse庞加莱根数: poincare elements受摄根数: perturbed elements瞬时根数: instantaneous elements吻切根数: osculating elements正则根数: canonical elements根数平均长度: numerical mean length两行轨道根数: tle密切轨道根数: osculating element密歇根数学杂志: michigan mathematical journal纬密,每寸纬纱根数: picksperinch表示穿入同一筘齿内的经纱根数的图形: denting plan碳纤维复丝纤维根数检验方法: test method for number of filaments in carbon fiber strands by microscopy