Additionally, penetration of medium and heavy tanks' top armour was possible only at high angles (above 40 degrees), which was hard to achieve in battle conditions.
此外，中型和重型戰車的頂部裝甲只有在高角度（英语：Plunging fire）（40度以上）時才有可能貫穿，這在戰場條件以下是很難實現的事。