Just as a snowflake requires a nucleus to spur the formation of its intricate crystal structure - a catalyst was required to spur the formation of the desired community.
一片雪花，必须有凝结核才能形成其复杂的晶体结构。在我们期望建立的群体中，同样需要这样的催化剂。
The formation mechanism of transition part shoal, function and arrangement of spur dike and training dike are expounded and living examples are given for explanation.
对过渡段浅滩形成的机理，丁、顺坝的作用和布置等方面进行论述，并以整治实例予以说明。
The formation mechanism of transition part shoal, function and arrangement of spur dike and training dike are expounded and living examples are given for explanation.
对过渡段浅滩形成的机理，丁、顺坝的作用和布置等方面进行论述，并以整治实例予以说明。
应用推荐