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

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

This then allows the lower plate lug to make contact of its two corners with the slanting walls of "v" groove.

这便于下面的极板年的两角与“v”字形沟槽的两个倾斜的壁相接触。

youdao

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

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

Can Israel afford to give up its own place in the lineup in the belief that the United States, hitting lower in the order, will actually go up to the plate and take its swings?

CNN: Obama's Iran problem and the Bush doctrine

But eventually, each atom encounters a plate at a temperature lower than its boiling point, at which point it sticks to the plate, just as water freezes when poured on to dry-ice.

ECONOMIST: Nuclear waste