是有.numMU这个属性的,我刚刚查帮助找到了' r% w, v7 q9 Y3 b" j
numMu : ^. z- E9 H# E3 H1 S4 d: Y' _
Usage: <mu_path>.numMu; 6 _& O5 w. h* ^$ D 8 H: o! S0 j, a5 N p" vThe method numMu returns the number of MUs located on the loading space of the MU designated by <mu_path>. : p. [1 s) \9 O/ ?1 }9 n 3 z0 @# G, V# K% K7 } l6 n& [The return value is of type integer. 4 i3 s; s+ F* ]: G% n8 v/ N