spicula

古罗马的一种投掷标枪,公元3世纪后期取代皮鲁姆

A thrusting javelin used by Romans that replaced the pilum in the late 3rd century.

尖锐的晶体,尤指冰晶

A sharp, pointed crystal, especially of ice.

尖锐的针状结构,尤指构成海绵骨架的针状体

A sharp, needle-like structure, especially those making up the skeleton of a sponge.

太阳色球层和日冕中的针状体

A small radial emission of gas seen in the chromosphere and corona of the sun.