The chairs were placed at regular distances.

椅摆放着。

The cycloidal equidistant-curve worm gearset is the new type of worm and worm gear transmission equipment.

摆线曲线蜗轩是一种新的蜗杆传。

The new type of rotary compressor has two key parts, an outer rotor and an inner one which employs isometric curve of trochoid as its profile.

从理论上分析了一种新内、外转结构回转式压缩机,其内转线由短幅外摆线的内线构成。

These observations allow one to formalize the definition of reflection: a reflection is an involutive isometry of an Euclidean space whose set of fixed points is an affine subspace of codimension 1.

这些观察允许我们形式化反射的定义: 反射是欧几里得空间的对合同构，它的集合是余维度为 1 的仿射空间。