rectangular rod造句

The ejector is a rectangular rod that pushes the completed slug from the mold aperture in the mold disk.
The conductors laid along the line consist of rectangular rods of very pure iron, placed, one on each side, about a foot from the rails.
where \ sigma is the impact stress, L is the length of the rod, c is the elastic wave speed, and h is the smaller lateral dimension of a rectangular rod.
At first calculating rods were round in cross section, but by the time of the Sui dynasty triangular rods were used to represent positive numbers and rectangular rods were used for negative numbers.
It's difficult to find rectangular rod in a sentence. 用rectangular rod造句挺难的