Lens are made of optical glass and should be cleaned with cloth made of special materials.
镜头都是由光学玻璃制成的，要用特殊材质的镜布来擦。
Diamond grinding wheels are widely used as grinding tools in manufacturing of hard and brittle materials, such as hard alloy, engineering ceramics, optical glass, semiconductor materials, and granite.
金刚石砂轮广泛用作硬质合金、工程陶瓷、光学玻璃、半导体材料、花岗岩等硬脆难加工材料的磨削工具。
The optical microscope and SEM were employed to analyze the damage of glass fiber during weaving and resin permeability in the course of molding of composite materials.
同时采用光学显微镜和SEM分别对织造中玻纤断裂情况和树脂在复合材料成型过程中的渗透性进行了研究。
In one embodiment, the optical concentrator 108 is formed by materials such as plastic and glass or other appropriate materials, with a high refractive index, such as 1.4 to 1.8 or higher.
在一个实施例中，由具有高折射率(诸如1,4至1.8或更高)的诸如塑料和玻璃的材料或其它适当材料形成光学集中器108。
This system is the optical-collimate one, with safety glazing materials fixed on the sample glass bracket from the life-size angle that can move in horizontal and vertical ways.
光学系统整体采用的是一个光学准直系统，安全玻璃以实车角度安装在试样支架上，并可以沿水平和垂直方向自由移动。
The raw materials are added into a crucible for melting, then the obtained glass liquid is added into a platinum crucible for melting, clarifying and homogenizing by an optical glass fusion method.
该光放大用玻璃的制备方法是把原料加入坩埚中，进行熔化，得到玻璃液，加入铂坩埚中，再用光学玻璃熔制法使其熔融、澄清、均化。
Optical glass is made of raw materials-sand, lime, and soda of the highest purity.
光学玻璃是由高纯度原料：沙子、石灰、纯碱制成的。
Optical glass is made of raw materials-sand, lime, and soda of the highest purity.
光学玻璃是由高纯度原料：沙子、石灰、纯碱制成的。
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