知识扩展
词组短语 filament winding纤维缠绕；灯丝绕阻；灯丝电源绕组；filament yarn.长丝纱线 词源考究 来自file，线，文件。引申词义灯丝，丝极。

中文词源： filament 灯丝，丝极 来自file,线，文件。引申词义灯丝，丝极。 filament
精选例句

常见考点例句：

A good vacuum allowed the filament to glow without catching fire .

在一个好的真空环境中，灯丝能够持续发光而不着火燃烧。

Swan experimented with a filament of carbonized paper , but it burned out quickly .

斯万试验了用碳化纸作灯丝，但它很快就烧断了。

They could refuse to light up for no apparent reason , because of some infinitesimal rupture in the filament .

由于灯丝里极其微小的破裂，它们可以没有明显理由地拒绝点亮。

The projection bulbs used in cinemas operate at just 50 c below their filament 's melting point and have to be changed every 50 hours or so .

影院里的投影仪运作时的温度刚好比其灯丝材料的熔点低50摄氏度，因此使用时间达到50个小时左右时，投影仪的灯泡就需要更换。

Old-style filament light bulbs have been banned from shops across the eu from today in favour of more energy-efficient versions but is the new technology bad for your health ?

自今天起，为实施提高能源效率的方案，旧式的灯丝灯泡已在全欧盟的商店被禁止销售，不过这项新技术会对健康不利吗？