【简答题】若某光栅的栅线密度为50线/mm,主光栅与指示光栅之间的夹角为θ=0.01rad,求其形成的莫尔条纹间距B H 是多少?
【简答题】简述莫尔条纹光学放大原理并回答下列问题。 若某光栅的栅线密度为50线/mm,主光栅与指示光栅之间的夹角为1.8°。 1求其形成的莫尔条纹间距BH是多少? 2莫尔条纹的宽度是栅距的多少倍?
【简答题】LCD 1602显示一个字符的操作过程为:首先 ,然后 ,随后 ,最后 。
【简答题】若某光栅的栅线密度为 50 线 /mm ,主光栅与指示光栅之间的夹角 θ =0.01rad ,求其形成的莫尔条纹间距 B H 是多少? 该光栅的位移分辨率是多少? 如需达到0.005mm分辨率,细分倍频应选多少?
【单选题】In 1976, after dropping out of college, Jobs started Apple with ____________.
A.
A manager at Hewlett Pachard
C.
His friend Steve Wozniak
【判断题】After dropping out of college, he took some classes he was interested in.
【简答题】若某光栅的栅线密度为50线/mm,主光栅与指标光栅之间夹角θ=0.01rad。请回答下列问题: (1)其形成的莫尔条纹间距B H 是多少? (2)若采用四只光敏二极管接收莫尔条纹信号,并且光敏二极管响应时间为10 -6 s,此时光栅允许最快的运动速度v是多少?
【简答题】若某光栅的栅线密度为 50 线 /mm ,主光栅与指示光栅之间的夹角 θ =0.01rad ,求其形成的莫尔条纹间距 B H 是多少?
【单选题】AFTER DROPPING THE PILOT means ________
A.
after boarding the pilot
B.
after the pilot leaving the ship
C.
after the pilot going on board
D.
after taking the pilot
【单选题】After dropping the pilot means _____
A.
after boarding the pilot
B.
after the pilot leaving the ship
C.
after the pilot going on board
D.
after taking the pilot