rectrix是什么意思

用法例句

Two nearly complete specimens of Caudipteryx preserved a lot more new information about its skeletal anatomy.

尾羽龙和原始祖鸟一起被认为是最早发现的带有真正鸟类羽毛的恐龙（Ji et al。

A recently collected specimen of Caudipteryx is described as a new species: C.

１９９８年夏，中国科学院古脊椎动物与古人类研究所辽西野外考察队在北票上园张家沟采集到一块保存相当完整的、属于尾羽龙的头后骨架。

The length of 6 species male central rectrics,as well as the width of both inner and outer web is significant P<0.

观察雉科6种29个雄性标本,测量中央尾羽性状并统计,结果表明:6种中央尾羽色斑格局不相同;中央尾羽长、内翈宽、外翈宽都存在显著差异(P<0。