词语解释 1、禽鸟头顶上的细长羽毛。
继续报导中国顶丝藻科新记录6种。
This paper is continued 6 species Acrochaetiaceae new to China i.
艉轴管镗孔加工专用刀具，包括刀柄、刀片及顶丝。
A screw shaft tube boring process professional cutter is provided, which comprises a shank, a blade and a jbckscrew.
5b型接头与钢管连接(钢管没有螺纹)可用螺钉顶丝固定。
The connection between ZD96-5B type connector and steel pipe (no screw on the steel pipe) may be fixed with top screw.
应用推荐