tā bǐ fāng xiàng de piān yí lái de xiǎo tiáo jiàn shì zhè ge jiǎo hěn xiǎo
它比Y方向的偏移来得小，条件是这个角很小。
It's way smaller than the excursion in the Y direction, provided that your angle is small.
v.displacement; bias; drift; excursion; offset; shifting
tā bǐ fāng xiàng de piān yí lái de xiǎo tiáo jiàn shì zhè ge jiǎo hěn xiǎo
它比Y方向的偏移来得小，条件是这个角很小。
It's way smaller than the excursion in the Y direction, provided that your angle is small.