Preheat the oven to 350 degrees.

预热烤箱至350摄氏度。

Preheat your oven to 400 degrees.

烤箱预热华氏400度（约摄氏204度）。

Preheat the oven to 450f.

烤箱预热到450摄氏度。

Preheat oven to 375 degrees.

首先将烘炉加热到375度。

Can you preheat the oven for me?

你能帮我预热烤箱吗？

The preheat unit is powered.

预热装置的电源已经接通。

Preheat plates in the oven.

将空盘放入烤箱预热。

Preheat the oven to 350 degrees F.

预热烤箱至350华氏度(约摄氏180度)。

Preheat waffle iron to medium high.

将华夫铁板调至中温预热。

You should preheat your car in winter.

冬季开车要先进衍预热。

Preheat oven to 275 degrees F (135 degrees C).

将烤箱预热至135摄氏度。

Preheat oven to 360 degrees F (180 degrees C).

烤箱预热到华氏360度（摄氏180度）。

Carrie: To begin with preheat the oven to 220C.

首先，将烤箱预热到220摄氏度。

Before soldering, be sure to preheat components.

焊接前零件一定要预热。

Preheat your oven to 500 degrees for at least one hour.

烤箱华氏500度(约为摄氏250度)预热一小时。

The sensible heat given by gas is used to preheat and dry fuel.

感热的气体被用来给预热和干燥的燃料。

Preheat oven to 325 degrees. Line a baking tray with non-stick tin foil.

烤箱预热至325度，烤盘扑上一层锡箔纸。

A shortened cycle should be used to preheat the system (ie omit the drying phase).

缩短的周期应该用来预热系统(即省略干燥阶段)。

The combustor is of the vaporiser type, and hence is equipped with three preheat burners.

燃烧室是汽化器的类型，因此是有三个预热刻录机。

A solar wall was also erected on the south-west facade of the building to preheat fresh air.

太阳能墙壁也竖立在大楼的西南立面来预热新鲜空气。

Please give the standards of the preheat before welding and those of the heat-treatment after welding.

请您提供焊前预热和焊后预热处理的规范。

Preheat the oven to 400 degrees with the racks positioned in the middle and upper thirds of the interior space.

预热烤箱至400度，将烤架放在中间偏上约三分之一的地方。