All buildings would be electrically heated , never mind the thermal conversion rate .
所有的建筑物都应当由电力供能，不用担心其热量转化率。
And instead of being powered by smoky little petrol engines , they are driven electrically .
而且它们由电力驱动，代替了少烟的汽油发动机动力。
But barely 1 % of industry sales last year were hybrid or electrically powered vehicles .
但是，在去年的行业销售中，仅有不到1%来自于混合或电动车辆。
They could power electrically driven wheels , letting an aircraft taxi without using its main engines .
它们可以给电力驱动的起落架轮子动力，让飞机不用主引擎就能在地面滑行。
A quarter of the weight of hb-sia is accounted for by its lithium-polymer batteries , which will power the four electrically driven propellers during the first test flights .
