缩小

Stop Down: To decrease the diameter of the light-admitting orifice of a lens by adjustment of an iris diaphragm.

缩小光圈：镜头的焦距和光圈的有效直径之间的关系。一可调节的彩虹光阑，减少透镜光孔的直径。

" Element :a fundamental, essential, or irreducible constituent of a composite entity."

元素，基本要素：一个组合整体中的基本的、最主要的、不可再缩小的组成成分。

Nevertheless, thousands of years, our forest resources is still very sad to be destroyed, the forest area is still irretrievably reduced.

尽管如此，几千年来，我们的森林资源还是令人痛心地被破坏，森林面积还是无可挽回地缩小了。

By use of continuation power flow method based on unified iteration, the step length around the critical point is reduced, so that whole PV curve and accurate critical point can be obtained.

该算法采用基于统一迭代法的连续潮流法，在临界点附近采取缩小步长的策略，可以精确求出整个PV曲线并得到精确临界点。

NGF had obvious cytotoxicity on these cell lines ,which shows to be dose-dependent, especially for MGC-803 and BEL-7404 ,their IC_(50) value at the 24~ hours are 49.9mg/L and 55.46mg/L ; Main features of apoptosis under fluorescent microscope include reduction in volume,nuclear chromatin condensation, intensification under jacinth fluorescence; The early apoptosis rate of pristine cells which detected by FCM increases with NGF dose increasing.

2NGF对4种人肿瘤细胞均有细胞毒性作用，且呈剂量依赖关系，尤其是对MGC-803和BEL-7404的抑制作用更强，作用24h的IC50值分别为49.9mg/L和55.46mg/L，荧光显微镜下可观察到MGC-803凋亡细胞的主要特点为：细胞体积缩小，染色质固缩，橘红色荧光增强；流式细胞仪检测到MGC-803细胞的早期凋亡率随NGF浓度的增高而增加，各浓度组与对照组的早期细胞凋亡率比较有明显差异(P＜0.01)。

It took about 40 years to reduce the minimum size from 640 acres to 40 acres. And during this period of time, the American politics was transformed from relatively conservative politics of the Federalist to Jacksonian mass democratic politics.

最小土地出售面积从640英亩缩小到40英亩，前后经过近40年的时间，美国也从联邦党人相对保守的政治转变为杰克逊的大众民主政治。

The size of myocardial infarction caused by coronary artery ligation was decreased by Jat ( 0.75mg/kg iv. 1 h before and 6 h after operation) in rabbits.

耳静脉注射Jat(每次0.75mg/kg)还能使家兔冠脉结扎所致的心肌梗死范围缩小(n=6；P.01)。

We also have observed some organs pathological changes of juvenile Jian Carp, such as pancreas acinous gland and zymogen granules of acinous gland cell disappearing, intercellular substance hyperplasia and inflammatory cells soakage, hepatatrophia, liver cell granular or vacuolar degeneration and necrosis, karyolysis or pyknosis, glycogen granules decreasing, metanephros atrophy, metanephric canaliculus epithelium granular or vacuolar degeneration and necrosis, mitochondrion swelling and mitochondrion cristae disappearing, karyolysis, distal convolutal tubule microvilli desquamating, spleen marrow cell degeneration and necrosis, intercellular substance of spleen hyperplasia, spleen atresia, blood corpuscle disappearing.

后肾土黄色、淡褐色或苍白色，肾小管上皮细胞肿胀、颗粒或水泡变性、坏死，细胞内有大量血细胞流出，线粒体肿胀，嵴结构消失，细胞核溶解，肾间质甲状腺滤泡和拟淋巴细胞增生，远曲小管微绒毛脱落、管道细胞界限不清。心脏肌纤维肿胀、颗粒或空泡变性，严重的肌纤维溶解、变细或断裂，肌纤维间水肿、炎性细胞浸润，部分心肌细胞核浓缩。脾脏暗褐色，脾髓质细胞变性、坏死，拟淋巴细胞明显减少，淋巴细胞岛少见、岛中细胞成份减少，黑素巨噬细胞中心减少、体积缩小，脾脏网状基质水肿，脾窦闭锁，血细胞减少。

"When viewing a specimen, a pathologist needs to move the slide, zoom in or out, and illuminate certain areas," explained Dr. Ola Kassim, the network's chief pathologist and director of laboratory medicine.

该网络首席病理师兼实验医学主任Ola Kassim医生解释说：当观察样本的时候，病理师需要移动切片，放大或者缩小、照亮特定视野。

KEF analyzed the effect of component tolerances on the overall response and found that by tightening these in the most critical areas an improvement in consistency could be achieved.

KEF从整个响应频段分析了组件的误差值后，发现在最关键的一些地方缩小误差的容许值，可以改进其一致性。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。