bulb是什么意思_bulb怎么读_中英文释义(含例句用法)

electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity

a rounded part of a cylindrical instrument (usually at one end);"the bulb of a syringe"

anything with a round shape resembling a teardrop

lower or hindmost part of the brain; continuous with spinal cord; (`bulb" is an old term for medulla oblongata);"the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning"

a rounded dilation or expansion in a canal or vessel or organ

中英词源

bulb 球茎，灯泡

词源同ball, 膨胀，鼓起，球。

bulb: bulb: [16] Bulb can be traced back to Greek bólbos, which was a name for various plants with a rounded swelling underground stem. In its passage via Latin bulbus to English it was often applied specifically to the ‘onion’, and that was its original meaning in English. Its application to the light bulb, dating from the 1850s, is an extension of an earlier 19th-century sense ‘bulbshaped swelling in a glass tube’, used from the 1830s for thermometer bulbs.
bulb (n.): 1560s, "an onion," from Middle French bulbe (15c.), from Latin bulbus "bulb, bulbous root, onion," from Greek bolbos "plant with round swelling on underground stem." Expanded by 1800 to "swelling in a glass tube" (thermometer bulb, light bulb, etc.).

词态变化

复数 bulbs;

权威造句

1. A 40 watt bulb would be quite sufficient and would not obtrude.: 40瓦的灯泡完全够亮了，并且不会晃眼。

2. An efficient bulb may lighten the load of power stations.: 一个节能灯泡也许就能减轻发电站的负荷。

3. This makes the total cost of the bulb and energy £27.: 这使灯泡与电费合计为27英镑。

4. The naked bulb was directly over his head.: 裸露的灯泡正好在他的头顶上方。

5. an unshaded light bulb: 没有灯罩的电灯泡

近反义词

corm 球茎

rhizome [植]根茎

tuber 块茎

storage organ 贮藏瀑

underground part 地下部,地下部分...

seed 种子

lamp 灯

incandescent lamp 白炽灯,白热灯...

lightbulb 电灯泡

light bulb 电灯泡

medulla oblongata 延髓

medulla 髓质

electric light 电灯

相似短语

vein of bulb of vestibule bulb 前庭球静脉

bulb bearing 生鳞茎的

bulb of penis 阴茎球

bulb of percussion 打击形成半锥体

condensing bulb 冷凝瓶

flame bulb 焰球

head bulb 头球

laminated bulb 膜被鳞茎

medullary bulb 延髓

bulb stern 球形船尾

单词分析

暂无,等待补充.

记忆方法

bulb：包。像个包一样的东西——植物的球茎；灯泡。

bulb是什么意思，bulb怎么读

bulb基本信息

英英释义