左边可见裂缝从黏膜延伸到黏膜下层、肌层，最终形成瘘管。
Seen here is a fissure extending through mucosa at the left into the submucosa toward the muscular wall, which eventually will form a fistula.
实践证明只要施工方法合理，事先进行充分地科研工作，完全可以实现不出现肉眼可见裂缝的防裂目标。
Practice proves that so long as the measure is reasonable, and research is in advance of work, the purpose that no crack can be seen by naked eyes will be realized.
实践证明，只要施工方法合理，事先进行充分研究工作，完全可以实现不出现肉眼可见裂缝的防裂目标。
It is proved by the application that as long as the method is rational and the work is studied fully, the goal of prevention of crack visible by naked eyes can be reached.
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