Items too small to be piece marked as noted above may be marked with smaller numerals or metal tags wired to steel members 不能象如上做出单件标识的太小的构件,可用更小的数字标识或使用金属标签将其用细铁丝绕在钢构件上
2.
Series fmo orifices are supplied with two pressure taps used to measure differential pressure across the valve orifice and a metal tag that displays flow rates by differential pressure 系列fmo孔配置两个测压孔，用于测量通过阀门孔的压差，以及一个金属标签，显示与压差对应的流量。
