The design of the structure of Caseegrain drawtube in space remote instrument was introduced.
介绍了空间遥感仪器中卡塞格伦镜筒的结构设计,利用三维CAD技术构建了产品模型。
The author apply ultrasonic vibration to the turning of thin-wall pieces to reduce the deformation, and an tools-tip height adjustment mechanism adapted to the vibration cutting system was developed.
作者将超声振动引入薄壁镜筒零件车削中以减少零件变形，并开发出了适用于振动切削系统的 刀尖高度调节机构，最后给出了超声切削和普通切削的对比数据。
Attach the infrared filter and focus on the subject. Read the indicated distance off the lens barrel.
按上红外线滤光片,对拍摄景物对焦,请读出镜头筒指示的距离。
Shift that distance setting over to the red infrared index mark. Set the exposure in accordance with instructions for the film.
移动镜头筒式距离设置超过红外线指示标记位置,并按照胶卷说明书,设置曝光。
binocular microscope
双目显微镜,双筒显微镜
a binocular telescope microscope ]
双筒目]望远镜显微镜]
A binocular or field glass.
双目镜，双筒望远镜
periscope binoculars
潜望镜式双筒望远镜
"Radio microphones catch all accompanying sound. They hang at the end of long. booms, out of the camera range, and follow the performers as they move."
无线话筒用来传送所有的伴音。话筒吊在长长的吊杆顶端，在摄像镜头之外，跟着演员移动。
20 - MinI Telescope
20-迷你单筒望远镜
20 - MinI Telescope - Out of stock
20-迷你单筒望远镜-缺货
binocular-type ophthalmic microscope
双筒型显微镜,眼科用
watch from a distance through binoculars
用双筒望远镜观看远处.
binocular ophthalmic loupe
双筒放大镜,眼科用
a pair of six-power binoculars
一副六倍的双筒望远镜
binoculars of 10 magnifications
倍率十的双筒望远镜
a binocular telescope [microscope]
双筒 [双目] 望远 [显微] 镜
They appear, they disappear.
镜头闪现，镜头又消失了。
a telephoto lens
远距照相镜头, 摄远镜头
Binoculars, telescope, microscope, photographic camera and equipment.
双筒望远镜，望远镜，显微镜，照相机及附属品。