0 a method used by scientists to discover whether a substance contains metal ions -- 焰色試驗，火焰試驗法（用來測試物質中是否含有某種金屬的方法）
The flame test is relatively quick and simple to perform, and can be carried out with the basic equipment found in most chemistry laboratories.
In principle, it is a controlled flame test with the intensity of the flame colour quantified by photoelectric circuitry.
The principle of the atomic emission spectrum explains the varied colors in neon signs, as well as chemical flame test results (described below).
We should not give anyone the impression that if upholstered furniture which contains polyurethane foam has passed the cigarette test and/or the flame test there is no danger.
The regulations were drawn up a year ago, and it was seen fit to include the flame test and the smouldering cigarette test side by side.
If no material passes the naked flame test, the choice is either to flout the regulations or virtually to destroy or do serious damage to an important industry.
I am sure that it would not be imposible or even dauntingly difficult for the industry to comply with the flame test standard.
The flame test is in many ways more important than the cigarette test.
