1. (不透明贴图)：因为这种贴图方法是使用位图的黑白灰度值产生效果的,所以它的应用很广,不单单可以用在不透明贴图(opacity)上. 还可以使用于高光级别贴图(specular level)、凹凸贴图(bump)、自发光贴图(self-illumination)等等几乎MAX中所有的贴图.

2. 透明度：并且自动生成运动表达式(Expressions)从而快捷实现图层之间精确的运动控制,比如用layer1层的位置属性的变化去控制Layer2层的放大或透明度. 先预览效果:2、打开3D开关,设置为3D层,展开Transform,设置轴心点(AnchorPoint)为(0,0,
0) ,透明度(Opacity)为0%.

3. 不透明性：乳光(opalescence):是一种类型的二向色性(Dichroism),看上去象是在高胶态系统(Dispersed systems)中存在着一些不透明性(Opacity). 此种物质在入射光方向观察呈现为微黄-红色,在 折射光方向观察呈现出蓝色,其特性为折射光与入射光正交,

1. 模糊；不透明
Opacity is the quality of being difficult to see through.

e.g. Opacity of the eye lens can be induced by deficiency of certain vitamins...
眼球晶状体的混浊可由缺乏某些维生素造成。
e.g. He insisted that the mineral content of the water determined the opacity.
他坚持认为水的清澈程度取决于其中矿物质的含量。

2. 费解；难懂；晦涩
If you refer to something's opacity, you mean that it is difficult to understand.

e.g. Its dramatic nuances were often generalised to the point of opacity.
它那戏剧性的微妙之处常被含糊处理到了晦涩的地步。

noun

1. the quality of being opaque to a degree
the degree to which something reduces the passage of light

Synonym: opaqueness

2. incomprehensibility resulting from obscurity of meaning

Synonym: opaqueness

3. the phenomenon of not permitting the passage of electromagnetic radiation