This Recommendation provides the guidance on the nominal amplitude of picture signals. 本建议提出了有关图象信号的标称幅度的导则。
However, for attaching nonpressure parts to pressure parts, the filler metal chemistry shall match the nominal chemistry of the pressure part. 但将非受压元件焊接受压元件时所用的填充金属,应与受压元件的标称化学组成相配。