STAS SR ISO 1204:1990
往復(fù)內(nèi)燃機(jī)．指定的旋轉(zhuǎn)方向和缸蓋的氣瓶和閥門(mén)的標(biāo)識(shí)以及引擎上發(fā)動(dòng)機(jī)和位置左右手的定義
Reciprocating internai combustion engines - Designation of the direction of rotation and of cylinders and valves in cylinder heads and definition of right-hand and left-hand in line engines and location on an engine