美国物业所有权轨制，即免除一切君主或封建主的拥有权或权力。

The system of ownership of property in the United States, meaning free from any claims or rights of a monarch or a feudal lord.

youdao

我们可以画一簇曲线，这簇曲线处处都有一个主方向作为切线，这些曲线叫做应力轨线。

We may draw curves which have everywhere one of these directions for a tangent, these curves are called stress trajectory.

youdao

该系列点焊机，主变压器均为进口冷轨硅钢片，因此，主变压器功耗小，各型空载电流小。

Its main transformer is made of imported cold rolled silicon steel, So its power loss is little with low no-load current.

youdao