abnormally long muscular contractions; slow relaxation of a muscle after a contraction
myotonia详细解释
my.o.to.ni.a n.（名词）Tonic spasm or temporary rigidity of one or more muscles, often characteristic of various muscular disorders.肌强直：一处或多处肌肉的强直性痉挛或暂时性僵硬，常以不同肌肉的紊乱为特征 【引伸】 my.oton.ic
