向前凸出

It barred the vast opening of the faubourg, that is to say, three streets, from angle to angle; ravined, jagged, cut up, divided, crenelated, with an immense rent, buttressed with piles that were bastions in themselves throwing out capes here and there, powerfully backed up by two great promontories of houses of the faubourg, it reared itself like a cyclopean dike at the end of the formidable place which had seen the 14th of July.

它挡住进入那一郊区的一大片岔路口，就是说，从这端到那端，它连续遮拦着三个街口，忽高忽低，若断若续，或前或后，零乱交错，在一个大缺口上筑了成行的雉堞，紧接着又是一个又一个土堆，构成一群棱堡，向前伸出许多突角；背后，稳如磐石地靠着两大排凸出的郊区房屋，象一道巨大的堤岸，出现在曾经目击过七月十四日的广场底上。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。