亡羊补牢，从其他网站上抄来补充一点：
A block heater is an electric element that warms the coolant in your engine, which in turn warms the engine block and lubricants. Warm engines start more easily, achieve their peak operating temperature more quickly, and don't have to work as hard to pump oil through the block. All of that translates into better fuel economy - in fact, studies have shown that block heaters can improve fuel economy by as much as 10 percent.作者: jeanxu 时间: 2004-4-13 08:12
020不必不好意思，再棒的专家也需要不断学习，进步，况且你原本就说明了对Block heater不是很吃的准，解释有误很正常。
再问020： 为什么，路试应该在车检前做?作者: jeanxu 时间: 2004-4-13 22:55
up,:confused: up, at least 10 words for an up.作者: DonCherry 时间: 2004-4-13 23:38
I guess, just guess why.
If technician road-tests car, then he might able to focus on those parts, which he
thinks might be in trouble, faulty.
Block Heater is the acronym of "Engine Block Heater", engine block is the place
that cylinders sit.
block heater 指的是加热发动机缸体的电热塞,并非后窗除霜器.