阴电的

A blue filter. He then projected each of the three positives, with the three images superimposed, onto a white screen with each image projected through the same filter he had used in making the transparency. Maxwell was lucky in his demonstration; years later it was pointed out that the collodion process

片，用绿、红、蓝光来穿透幻灯片，之后再将这三种颜色重叠并投射在一张白色的萤幕上，在明确度方面使用相同方式在每张投影片上，马克斯韦尔在他的示范上是幸运作成功，但是几年之后，这种方式被修正，因为阴电性对红光是迟钝的但是对苏格兰格子呢的红色部分是敏感的。

Means the parent directory, so this command means to execute "toolchain.sh," which is in the current directory.

代表父目录，所以这个命令就是执行当前目录下的"toolchain.sh"。

Yes,In fact,I'm on our city ream.

是的。事实上我是我们市队的。