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Certain lenses are bicylindrical.是什么意思？

Certain lenses are bicylindrical.

某些镜头是两筒面的.

相关词汇
certain lenses are bicylindrical

certain

adj. 某一，必然的，已确定的；pron. [动词用复数]某些；
例句
Paramedics are trained to administer certain drugs.
护理人员们接受了配发某些药物的培训。

lenses

n. 透镜，镜头( lens的名词复数 )，眼睛中的水晶体；
例句
Why aren't all lenses supplied with a lens hood?
为什么不给所有的镜头都配上遮光罩呢？

are

vi. （用于第二人称单复数现在时，第一、三人称复数现在时）是；n. 公亩（等于100平方米）；
例句
We are scared to abandon ourselves to our feelings in case we seem weak or out of control.
我们不敢放纵自己的情感，以免显得太过软弱或缺乏自制。

bicylindrical

adj. 有两个筒面的；
热门例句
He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时，可以向商业票据的背书人要求支付的权力。
相关例句
...a stream of sweet water.
一股纯净的水
It was unbelievably dramatic as lightning crackled all round the van.
闪电在货车周围炸开时，情景异常壮观。
The United Nations has issued a stamp in honour of Captain Alfred Dreyfus.
联合国发行了一枚纪念阿尔弗雷德·德雷富斯上尉的邮票。
Still waters run deep.
静水流深。
Some of the conditions in the contract are too stringent.
合同中有几项条件太苛刻。
Someone was seen depositing a packet...
有人看见一个人放下了件小包裹。
They were skirmishing close to the minefield now.
他们当时正在雷区附近交火。
I will do whatever you wish.
我会对你言听计从。
The words lashed against Chueh - hui's brain till he thought it would shatter.
这些字像许多根皮鞭接连地打着 觉慧 的头,他觉得他的头快要破碎了.
The baby was sucking away at the empty feeding - bottle.
那个孩子正在吮吸着空奶瓶.