zero setting knob 置零旋钮
SETTING KNOB FOR DIGITAL CLOCK 数字时钟调整钮
handle setting knob 手柄设定旋钮
azimuth setting knob 方位安置钮
speed setting knob 选速杆手柄
index setting knob 标志调整旋钮
circle setting Knob 对零螺旋
latitude setting knob 纬度给定旋钮
barometer setting knob 气压调整旋钮
Twist the knob to the right setting.
把旋钮拧到适当的定位档上。
Twist the knob to the right setting.
把旋钮拧到适当的定位挡上。
If flow rate is in excess of that specified, turn indicator knob towards closed position, noting pressure drop and valve setting and determining new flow rates from flow rate chart.
如果流量超过规定，将指示器旋钮旋转到关闭位置，注意压降和阀门设置，并从流量表中确定新的流量。
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