Note that r ¯ ( λ ) {\displaystyle {\overline {r}}(\lambda )} and g ¯ ( λ ) {\displaystyle {\overline {g}}(\lambda )} are zero at 435.8 nm, r ¯ ( λ ) {\displaystyle {\overline {r}}(\lambda )} and b ¯ ( λ ) {\displaystyle {\overline {b}}(\lambda )} are zero at 546.1 nm and g ¯ ( λ ) {\displaystyle {\overline {g}}(\lambda )} and b ¯ ( λ ) {\displaystyle {\overline {b}}(\lambda )} are zero at 700 nm, since in these cases the test color is one of the primaries.
注意 r ¯ ( λ ) {\displaystyle {\overline {r}}(\lambda )} 和 g ¯ ( λ ) {\displaystyle {\overline {g}}(\lambda )} 在435.8nm处为零， r ¯ ( λ ) {\displaystyle {\overline {r}}(\lambda )} 和 b ¯ ( λ ) {\displaystyle {\overline {b}}(\lambda )} 在546.1nm处为零，而 g ¯ ( λ ) {\displaystyle {\overline {g}}(\lambda )} 和 b ¯ ( λ ) {\displaystyle {\overline {b}}(\lambda )} 在700 nm处为零，因为在这些情况下测试颜色是原色之一。