Secondly, the shape Size and mechanical interface with the mechanical pump-line similar to the existing models on the installation is very convenient;
第二，外形尺寸和机械接口与机械式直列泵相似，在现有机型上安装很便利；
2
In response to the October 1987 stock market crash, the Fed turned on its money pump and over the next year final sales shot up by 7.5%, well above the trend line.
However, these advantages may be outweighed by the flow restriction the element creates in the intake line and the negative effect this has on pump life.