Task: Translation
Input (Czech): Souprava dvou  roub  (1, 2) pro  roubov   erpadlo, uspo° dan²ch vz jemn  rovnob  n  se vz jemn²m mimost°edn²m z b rem a s ·hlem op s n  nejm n  720.degree. v jednochod m proveden , opat°en  pop° pad  vyva ovac mi dutinami  (4) na konc ch  roub  (1, 2), je sestavena tak,  e d lky  roub  (1, 2) jsou odli n  od cel ho n sobku stoup n  jejich z vit  a/nebo vn j   obrysy  roub  (1, 2) jsou ve st°edn  vstupn  oblasti zm n ny pro dosa en  jejich vyv  en .\
Output (English): A set of two bolts (1, 2) for screw pump, aligned with each other in a slight extraordinary manner and with the same angle as 720.degree. In one embodiment, the provision of the cavities (4) at the ends of the bolts (1, 2) is provided so that the bolts (1, 2) of the bolts (1, 2) are different from each other. their outlines and / or outlines of the bolts (1, 2) are changed in the middle of the inlet region for their achievement. \ t