distance on the X-axis between the beginning of two adjacent profile elements, kahe külgneva profiilielemendi alguse vaheline kaugus X-teljel/lähtejoonel, distance on the refefrence line between the beginning of two adjacent profile elements

distance on the X-axis between the beginning of two adjacent profile elements, kahe külgneva profiilielemendi alguse vaheline kaugus X-teljel/lähtejoonel, distance on the refefrence line between the beginning of two adjacent profile elements