夹角的英文：
included angle
separation angle

参考例句：

The angle contained by two sides of a triangle
三角形两边的夹角.

(in surveying)angle between this arc and the meridian
(测量中)方位角(此弧与子午圈之间的夹角).

The angle between the plane of the ecliptic and the equatorial plane is the obliquity of the ecliptic
黄道面与赤道面的夹角是黄道的倾角。

Angular distance is the distance between two objects measured as an angle from a given point
角距离，是由一定点到两物体之间所量度的夹角。

Angular distance,ie the distance between two objects measured as an angle from a given point
角距离(由一定点到两物体之间所量度的夹角).

The smaller the angle, the better the fiber alignment and the more parallel the fibers will be.
夹角越小,纤维排列越整齐,纤维在纱体中的平行度越好。

The angle of the feed into the friction rolls affects fiber alignment.
纤维喂入时与磨擦辊的夹角对纤维在纱体中的排列有一定的影响。

included是什么意思：
adj. 包括在内的
v. include的过去式和过去分词

The tools include a knife and a fork.
工具是一副刀叉。

It includes damage and loss in transit.
这也包括运送途中的损坏和遗失。

The freight is included in the account.
运费包括在帐内。

angle是什么意思：
n. 角；角度；观点
v. 垂钓，钓鱼；形成角度，调整角度；着眼于；针对

The angle of incidence equals the angle of reflection.
入射角等于反射角。

angle of heel in tur
回旋倾侧角

initial incidence angle
初始入射角

separation是什么意思：
n. 分离，分开；分居；间隔，距离；分选

elbow separator
弯头脱水器

But have you ever tried to separate or thought of separating?
可你们曾试图分居或考虑过分居吗？

Every order is coded separately.
每份订单都单独编号。