pencil

A1 noun

Các nghĩa

bút chì · viết chì

A writing utensil with a graphite (commonly referred to as lead) shaft, usually blended with clay, clad in wood, and sharpened to a taper.
chùm tia sáng

An aggregate or collection of rays of light, especially when diverging from, or converging to, a point.
họ hình học

A family of geometric objects with a common property, such as the set of lines that pass through a given point in a projective plane.

A drillable robot is capable of placing its end link in any orientation in the pencil of planes containing its first link.
túm lông nhỏ

A small, thin tuft of hairs or feathers.