“ballistic trajectory”造句，怎麼用ballistic trajectory造句

Overhead came the shrill sound of shells breaking through the air, and a shell, under a certain ballistic trajectory, came straight at them.

ballistic trajectory

The example of ballistic trajectory simulation in the 57mm antiaircraft artillery is given in the paper. The essential principle can be popularized to ballistic trajectory simulation of other caliber antiaircraft artillery.

Aimed at the existing problem of a certain type of aircraft sight, a bomb performance improved equipment is developed for the ballistic trajectory windage on non-standard weather condition.

In order to measure ballistic trajectory accurately, the measurement precision of the photoelectric theodolite should be investigated.

Measurement error from the photoelectric theodolite is the main error in the ballistic trajectory measurement.