1.
something that protects from direct sunlight.
阻止阳光直射的东西。
2.
Now the slanting rays cover a much larger surface of the earth than the same number of rays coming straight down.
此时，斜射的光线要比同样数量的直射的阳光在地表的照射面积大。
3.
Also note the sun exposure and shade throughout the day.
哪些地方是阳光直射的，哪些是荫蔽的。
4.
It isn't a matter of taking aim and firing a straight shot.
那不只是瞄准和直射的问题。
5.
The violent daylight drilled into the room.
强烈的阳光直射进室内。
6.
The violent daylight drills into the room
强烈的日光直射进室内。
7.
fixed element (of a collineation)
(直射变换的)不动元素
8.
Vertical angle of maximum candlepower emission
最大发射光线的垂直角
9.
The sun was in my eyes.
太阳直射到我的眼里。
10.
90 deg. refl. - controls the reflectivity of surfaces perpendicular to the viewer.
反射控制与视线垂直的表面的反射。
11.
When a surface is perpendicular to the rays, their intensity is at their maximum.
当表面与射线垂直时，射线的强度最大。
12.
The Reflection and Trans Mission in Two Mediums Demarcation When Sound Wave Vertical Incidence;
声波垂直入射在两种介质界面处的反射和透射
13.
Normal incidence
垂直入射(亦见直射声束)
14.
"enfilade:Gunfire directed along the length of a target, such as a column of troops."
"纵向射击:纵直射向目标,例如一支部队的炮火."
15.
Ponits range from one for the outer white to ten for the bull.
射中外面的白色环得一分——直到（射中）黄心得十分。
16.
Gunfire directed along the length of a target, such as a column of troops.
纵向射击纵直射向目标，例如一支部队的炮火
17.
Points range from one for the outer white to ten for the bull.
射中外面的白色环得--直到(射中)黄心得十分。
18.
Measuring Refractivity of Irregular Triangular Prism with Method of Vertical Incidence;
用垂直入射法测非等腰三棱镜的折射率