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- Have your glasses got plastic lenses? 你的眼镜是用塑胶镜片的吗?
- Has two converging lens system; the objective and the eyepiece. 有两个会聚镜头系统;物镜和目镜。
- plastic lens system 塑料透镜系统
- Products wanted: Ophthalmic plastic lenses. 需要货品:塑胶眼部镜片。
- The usually circular area in which the image is rendered by the lens system of an optical instrument. 视区光学仪器的透镜系统所能看到的通常是圆周的区域
- Imagine that we have some sort of Lens system which forms an image of an extended object. 设想我们有某种透镜系统，它对一个扩展物体成象。
- HD155-S2 Lantern consisits of Fresnel plastic lens ,plastic base ,flasher,sunswitch and lampchanger.It has the character of portability,durability and high intensity. S2型航标灯由菲涅耳型塑料透镜、塑料灯座、闪光器、日光开关以及换泡机等组成。
- Compound lens or lens system designed to be free of astigmatism and able to form approximately point images. 没有散光并且能够形成近似的图像的。
- The black plastic lens will delay visual sense of perception, so the plastic photoscope will make us explain the motion of the shadows in a way of a certain illusion. 黑色塑料镜片会延迟视知觉，所以塑料透视镜会让我们以某种错觉解释影子的动作。
- The ratio of the focal length of a lens or lens system to the effective diameter of its aperture. F值物镜或物镜系统的焦距与入射光孔直径之比
- HD155-S1 Lantern consists of Fresnel plastic lens, plastic base, flasher, sunswitch and lampchanger.It has the character of portability, durability and high intensity. S1型航标灯由菲涅耳型塑料透镜、塑料灯座、闪光器、日光开关以及换泡机等组成。
- An achromatic lens system may consists of several cemented or separated groups of orown and flint glasses. 一个消色差的透镜系统可由若干个互相贴合的或互相分离的、由冕玻璃和火石玻璃组成的组元组成。
- You can disguise scratches on the plastic lens covering the odometer and other indicators on your car's dashboard by rubbing over them with a bit of baby oil. 用一点点婴儿油轻轻擦擦，你可以轻松掩饰汽车仪表盘上覆盖里程表和其他指示器的塑料镜面上的刮痕。
- The lens or lens system in a microscope or other optical instrument that first receives light rays from the object and forms the image. 物镜首先从物体上接收光线并形成影像的显微镜或其它光学仪器中的透镜或透镜系统。
- Even the simple trilobite has an eye (complete with its double lens system) that's considered an optical miracle by today's standards. 按照今天的标准，即使是简单的三叶虫，它的眼睛（完美的双镜头系统）也是一个光学奇迹。
- The PMW-EX1R features a hand-held design, does not have an interchangeable lens system, and will be available in December 2009 with an MSRP of $7,790. 在PMW-EX1R功能手持设计，目前还没有更换镜头系统，并将于2009年12月与零售价的七七九零美元。
- Plastic lenses are provide 100% UV blocking protection and are shatterproof. 塑料镜片，100%25阻挡UV，防碎。带有可调节的弹性镜带。
- To evaluate the application value of scanning laser angiography with a wide-field contact lens system in the diagnosis of choroidal melanoma. 评价广角激光扫描血管造影技术在脉络膜黑色素瘤诊断中的应用价值。
- HD70-S1 Inland Lantern consists of Fresnel plastic lens, plastic base, flasher and sunswitch and twin filament lamp, color-lamp for color light.It has a simple watertight structure of durability. HD70-S1 型内河航标灯由菲涅耳型塑料透镜、塑料灯座、闪光电路板、日光开关等组成，内装双丝灯泡，色光用染色灯泡。
- The condenser is equipped with an iris diaphragm, a shutter controlled by a lever which is used to regulate the amount of light entering the lens system. 聚光镜装配有瞳孔膜，那是一个有贡杆控制的快门，用来调节进入镜头系统的光量。
