最低位置 meaning in English

extreme lower position

Inserts a zero bit in the lowest position on each shift
在每一移位的最低位置插入零位。
On the contrary , an object reaches its lowest position when passing through the semi - circle which includes the nadir and the nearest celestial pole , and this phenomenon is called lower culmination
经过包括天顶的那半个子午圈时，天体到达最高位置，称为上中天。经过包括天底的那半个子午圈时，天体到达最低位置，称为下中天。