Terms containing angle at a

Subject	English	Russian
mech.	at a certain critical angle to the normal	под некоторым критическим углом к нормали
mech.	at a constant angle with the axis	под постоянным углом к оси
tech.	at a definite angle	под опрёделённым углом (e.g. turned at a definite angle in relation to the axis – повёрнутый под определённым углом к оси Soulbringer)
gen.	at a 45-degree angle	под углом 45° (A sighting in June almost exactly a month later took place in the immediate vicinity of Mounts St. Helens. A passenger on board a Boeing 737 reported a strange craft traveling at a 45-degree angle before disappearing into the clouds. (ufoinsight.com) ART Vancouver)
gen.	at a right angle	под прямым углом (to; к)
mil.	at a right-angle	под прямым углом (Alex_Odeychuk)
tech.	at a shallower angle	под небольшим углом (Alex_Odeychuk)
construct.	at a straight angle	под прямым углом