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The famous lever squat belt. It is characterized by convenient wearing, but still belongs to single row type. In terms of strength and stability, it is not better than double rows of the same specification.The second classification principle of organisms is the lineage classification principle aiming at establishing evolutionary lineage. The classification method following this principle is called lineage classification. The representative of pedigree classification is "branch systematics". It advocates that the branches in evolution should be taken as the criteria for identifying and distinguishing classification units and the basis for determining the pedigree relationship of each classification unit. The so-called co-ancestral proximity (similar to a group of people being a grandfather) is used to measure the genetic relationship between different taxa and determine their position in the pedigree. The classification system finally established is an evolutionary pedigree reflecting the history of phylogeny, which is a deeper description of biological relationship. In other words, the basic principle of pedigree classification is that the classification system conforms to the evolutionary pedigree. Pedigree classification is only applicable to organisms and cannot be used for abiotic classification.该剧讲述了20世纪40年代的民国时期广东广州西关太平街生活着72家房客，故事主要描述房东与房客的较量，以及街坊生活的酸甜苦辣。Disk.shutdown ();胡宗宪不给徐文长拒绝的机会，继而说道，狼兵和徐海的事，我与几人谈过，确实该依你的意思。