曝光

But shooting the sun is tricky. On a clear day, the sun is so bright that your camera's meter will tend to underexpose everything else in the frame. Shoot in manual mode, or take a reading without the sun in frame, depressing the shutter button halfway to hold the exposure, then reframe before you shoot. If you're shooting film, bracket a lot to make sure of getting the exposure you want.

把太阳放在构图中以表达沙漠中的高温和荒芜，但拍摄太阳比较麻烦，晴空下的阳光影响相机的感光计，以至于构图中其它部分曝光不足，为避免这种情况，要启用相机的手动模式，或者是将太阳从构图中排除后，半按下快门固定曝光值，然后重新选择有太阳的构图，将快门按到底。

Think about including the sun in your photograph—it's one sure way to say hot and harsh. But shooting the sun is tricky. On a clear day, the sun is so bright that your camera's meter will tend to underexpose everything else in the frame. Shoot in manual mode, or take a reading without the sun in frame, depressing the shutter button halfway to hold the exposure, then reframe before you shoot.

把太阳放在构图中以表达沙漠中的高温和荒芜，但拍摄太阳比较麻烦，晴空下的阳光影响相机的感光计，以至于构图中其它部分曝光不足，为避免这种情况，要启用相机的手动模式，或者是将太阳从构图中排除后，半按下快门固定曝光值，然后重新选择有太阳的构图，将快门按到底。

It is because: when two light waves add, the intensity is enhanced thus the paper overexposure and appear to be white; on the other hand, when two light waves counteract, the paper underexposure and appear to be black.

当光波和光波叠加的时候，它们就加强，打到胶片上就造成曝光，冲洗出来就是白的；当光波互相抵消，打到胶片上就不能曝光，冲洗出来就是黒的。

When the exposure indicator is displayed in the viewfinder display, the exposure compensation is set.

当曝光指示灯出现在取景器显示中，曝光补偿被设置。

The effects of the relation on recording geometry with effective electrooptical coefficient and space charge field, wavelength of diffraction beam and diffraction angle on exposure sequence are taken into account, and the perfect exposure sequence is discussed based on recurrence method.

考虑有效电光系数和空间电荷场随写入光路几何组态的变化关系，以及各信道衍射光波长、衍射角等因素对曝光时序的影响，利用递推法推导出更为精确的曝光时序。

The characteristics of different exposal films are tested and some valuable parameters with which to select correct exposal material and expose high quality gratings are achieved.

详细实验了各种常用曝光材料应用于投影莫尔测量系统的可能性及可以达到的精度，为正确选用曝光材料及曝制精良参考栅提供了很有价值的参数。

From the changing curve of the photoinduced anisotropy with the exposal, the best exposure scale 13～20 J/cm2 was found, and the reason was theoretically analyzed.

实验还测量了光致各向异性与曝光量的特性曲线，发现最佳曝光量为13～20 J/cm2；理论分析了其原因。

We know that even the-process is the photoptic quadrochromatic Fasciola to box appears quadrochromatic glass substrates in close contact when you have finished the exposure, exposure, vacuum release tablets blowing photoptic before you proceed to the next.

我们懂得，不断晒的工艺是不兵感光片呼到草稿框的玻璃上来与草稿片基精密隔绝曝光，曝光完后撤废假不满，不兵感光片呼下再进不静下一晒。

Scan to adjust the brightness and contrast, overexposed picture because the brightness is too high, it looks pale; inadequate picture exposure due to the brightness is too low, it looks nigrescent.

扫描时给调动光度和不差比度，曝光功分的图片由于光度太矮，看上去发白；曝光不敷的图片由于光度太矮，看上去发暗。

Photomechanical transfer: Paper negative exposed in the normal way and developed in contact with positive material.

照相移印：用一般曝光法把纸底片曝光，然后和正片材料接触显影。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。