Beneath the handwheel is one set of wrench flats on a nut threaded into the valve body. This is the diaphragm-retaining nut.

在手轮下面，在一个旋进阀体的螺母上面是一套扳手面。这是横膈膜止动螺母。

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The aim of project is to develop a set of digital electronic torque wrench based on microcontroller.

目的是研制出一套基于微处理器的数显扭矩扳手。

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The upper set of wrench flats belong to the packing nut, which is threaded into the valve body.

扳手面上面的那个属于衬垫螺母，它是通过螺纹旋进阀体的。

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Some critics said the industry's move could throw a wrench in a separate year-long effort by the World Wide Web consortium to set an international standard for do-not-track.

WSJ: Web Companies Agree to Support 'Do Not Track' System