The upper plate absorbs neutrons, and the lower plate reflects them.

上平板用于吸收中子，下板可以反弹它们。

youdao

There is friction between the plates, so that crinkling of the upper plate occurs.

在板块之间有摩擦力，所以位于上面的那个板块会起褶皱。

youdao

A flexible construct (30) extends vertically from the upper plate to the lower plate.

一柔性结构(30)从上板垂直延伸至下板。

youdao

When the charge is applied, if the upper plate is negative, we would expect that the negative droplet would be repelled at a rate exceeding the gravitational fall.

当电荷起作用时，如果上边的板子是负电的，我们可以期待负电的液滴会,超过重力下降速度的速度被排斥。

麻省理工公开课 - 固态化学导论课程节选

The upper plate absorbs neutrons, and the lower plate reflects them.

BBC: Neutrons could test Newton's gravity and string theory

The third objective, efficient design, involved sandwiching the nanostructured bismuth telluride between two copper plates and then enclosing the upper plate (the one coated with the light-absorbing oxides) and the bismuth telluride in a vacuum.

ECONOMIST: Solar power

It could be viewed without assistance from the upper deck, and surely at home plate, where the unimpressed Red Sox pounded Chamberlain for another three ugly runs and rendered the Stadium silent.

WSJ: Jason Gay | Requiem for the Joba Mustache