Four pins means you can have four sensors, say two temperature sensors, one for ambient and the other for panel temperature, a light sensor, and a wind speed sensor.

四个插脚意味着可以有四个传感器，比如两个温度传感器(一个用于外界温度，一个用于面板温度)、一个光传感器和一个风速传感器。

youdao

One panel will discuss the failings of the discipline in light of the financial crisis.

有个座谈小组将讨论针对金融危机，该学科暴露出的缺点；

youdao

The key was bending the light the optimal amount, enough that it enters the solar panel at an angle, but not so much of an angle that the light reflects off and is lost.

这其中关键在于折射最理想数目的光线，也就是让尽量多的光线转到能进入太阳能板的入射角度，而使尽量少的光线处于被反射掉的入射角度。

youdao

How it works:Ones and zeroes of digital data are first converted into checkerboard "pages"of bright and dark pixels using a liquid-crystal panel called a spatial light modulator.

FORBES

The upper flashing lights are integrated into the roof panel, eliminating the need for a bolted-on light bar that causes aerodynamic drag -- reducing fuel economy -- and can lead to rust.

CNN: Cops help dream up high-tech police car

Apple has asked companies in its supply chain to develop flat panel modules and LED light bars for two iPad prototypes code-named J1 and J2, the story says, adding that TPK Holding will begin to supply touch panels to Apple in November before Wintek start ships similar parts in December.

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