tappings

Then, what was the surprise of the crew of the large ship to hear strange tappings in the hold.

接着大船上的水手听见底层舱中发出奇怪的敲击声，他们是多么的惊讶！

Watts air scoops have heavy cast iron construction. They have tappings for the installation of an expansion tank and air vent.

美国瓦茨导气罩具有重型铸铁结构，并都配置用于安装一个膨胀罐和排气阀的连接端口。

tappings to the transmitters should be taken from the same side of the pipe, and for 2-out-of-3(2oo3) installations.

对于3选2的仪表安装，所有变送器的取压口要在管道的同侧。

tappings to the transmitters should be taken from the same side of the pipe.

连接变送器的法兰接头要在管道的同一侧。

40L with test lever and short thermostat for installation directly in available tank tappings.

40L型号安全阀配置测试杆和较短的温控器，用于直接安装在容器安装孔上。

depth of drilling and tappings to ensure adequate residual wall thickness;

钻孔和螺纹的深度，以保证足够的剩余壁厚；