English translation for "constant bepth variable pitch screw"
等深不等距螺杆
Related Translations:
pitch: n.1.沥青;含有沥青的物质;松脂,树脂。2.人工合成沥青;人造树脂。短语和例子mineral [Jew's] pitch 地沥青。 pitch black [darkness] 漆黑(的)。 Touch pitch, and you will be defiled. [You can't touch pitch without being defiled.] 近墨者黑。v