bulb

noun

1. a rounded part of a cylindrical instrument (usually at one end)

e.g. the bulb of a syringe

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

Synonym: light bulblightbulbincandescent lampelectric lightelectric-light bulb

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

4. lower or hindmost part of the brain
continuous with spinal cord
(`bulb' is an old term for medulla oblongata)

e.g. the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning

Synonym: medulla oblongatamedulla

5. a modified bud consisting of a thickened globular underground stem serving as a reproductive structure

6. anything with a round shape resembling a teardrop

1. 电灯泡
A bulb is the glass part of an electric lamp, which gives out light when electricity passes through it.

bulb的解释

e.g. The stairwell was lit by a single bulb.
楼梯间只有一盏灯照明。

2. 球茎；鳞茎
A bulb is a root shaped like an onion that grows into a flower or plant.

bulb

e.g. ...tulip bulbs.
郁金香球茎

1. 灯泡：在梳妆台上我找到了30/30的子弹(A30/30BULLET),灯泡(BULB)和珍珠(PEARL),然后使劲推上面的镜子,得到一把钥匙(KEY). 搜寻床铺时,我在床头女人雕像上找到了一支箭(ARROW),再把它装在床头边一丘比特雕像上,启动暗藏的机关,

2. 鳞茎：3.鳞茎(bulb)由许多肥厚的肉质鳞叶包围的扁平或圆盘状的地下茎,称为鳞茎. 4.球茎(corm)球状的地下茎,如荸荠(Eleocharistuberosa)、慈姑、芋等(图3-121,D、E),它们都是根状茎先端膨大而成. 球茎有明显的节和节间,节上具褐色膜状物,

3. bulb什么意思

3. 球：尿道海绵体的前端蘑菇状膨大形成阴茎龟头,覆盖着阴茎海绵体前端,后端稍膨大形成尿道球(bulb),位于泌尿生殖膈下部两侧阴茎脚之间,被球海绵体肌(bulbcavernousmuscle)所覆盖.

4. 球管：相较于150W等级的长效型DC点灯之金属卤素灯,相同光源辉度时超高压水银灯可减少86%的球管(bulb)外径与40%的电弧长度(表1),也就是说球管愈小,灯泡的反射器(reflector)也相对的变小;电弧长度愈短,光使用效率则愈高,