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concave lens是什么意思？

concave lens

凹透镜

相关词汇
concave lens

concave

n. 凹面，成凹形；adj. 凹的；vt. 使成凹形；

lens

n. 透镜，镜头，眼睛中的水晶体，隐形眼镜，汽车的灯玻璃；
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
They are looking for someone with a real sense of commitment to the job.
他们正在找一个对这一工作有献身精神的人。
This communication is confidential.
这消息是机密的。
A dog provides some companionship.
狗可以作伴。
The city commissioned a monument to commemorate the battle.
该市委托人修建了一座纪念碑以纪念这次战役。
There is no logically compelling argument to support their claims.
没有任何逻辑上有说服力的论据来支持他们的主张。
He compounded with his creditors for a postponement of payment.
他与债权人达成协议延期付款。
Tact is a valuable commodity.
圆滑老练是很有用处的。
The committee which was[who were] responsible for this decision would consider it over again.
对这一决定负责的委员会是会重新考虑它的。
He was comparatively calm and concentrated in judging how to defeat his opponent.
他相对冷静沉着,聚精会神地判断如何打败对手。
I heard he ask her to compose herself.
我听到他叫她镇定。
She suspected him of complicity in Ashok’s escape.
她怀疑他参与了阿肖克的逃跑密谋。
She was complacent about her achievements.
她对自己的成绩沾沾自喜。
Income in New England is commonly 10% below the national average.
在新英格兰人们的收入通常比全国平均数低10%。
I am prepared to make some concession on minor details, but I cannot compromise on fundamentals.
在一些细节上我可以作些让步，但在基本原则上我是不会妥协的。