When a surface is perpendicular to the rays, their intensity is at its maximum.

当表面与射线垂直时，射线的强度最大。

《新英汉大辞典》

Hardware of servers can be used at its maximum processing capacity.

尽可能充分地发挥服务器硬件的处理能力。

youdao

At temperatures above the higher set point, the fan will operate at its maximum speed.

当环境空气超过最高设置温度时，风扇将会以最大转速工作。

youdao

The high-off-the-ground '05 FCX felt skittish even on the straightaway at its maximum speed of 140 kph (about 87 mph).

CNN: Hydrogen-bombing down the track

Mr White said the organisation was "sending record levels of water in to the network and water production is at its maximum capacity".

BBC: Water for most Northern Ireland homes 'by next week'

Most of it went in 90 minutes, at a rate that at its maximum was faster than the average flow of the Niagara Falls.

ECONOMIST: A meltdown tinged with acid