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Polylactic acid (PLA) is a new bio-based and renewable biodegradable material, which is made of starch raw materials proposed by renewable plant resources (such as corn). Starch raw materials are saccharified to obtain glucose, then glucose and certain strains are fermented to produce high purity lactic acid, and polylactic acid with certain molecular weight is synthesized by chemical synthesis method. It has good biodegradability, can be completely degraded by microorganisms in nature under specific conditions after use, and finally generates carbon dioxide and water without polluting the environment, which is very beneficial to environmental protection and is recognized as an environment-friendly material. This thing is actually a long piece, and then "curled up" in it and wrapped in a cylinder shape. What's the use? You will see it in a short time.这是一个关于Pachara的故事，两千多年前，他的情人Matira Jijikb.com诅咒他永生不死，他等待着被解开诅咒。他认为患有心脏病的艺术家PraoPloy是Matira的转世。你在这逼问我，哎呦，你可真不愧是咱大靖的榜眼——我看你是瞎了眼。然而就是这一急躁，什么都望到九霄云外去了。Considering N categories C1, C2 …, CN, the basic idea of multi-classification learning is "disassembly method", that is, multi-classification tasks are disassembled into several two-classification tasks to solve. Specifically, the problem is split first, and then a classifier is trained for each split second classification task. During the test, the prediction results of these classifiers are integrated to obtain the final multi-classification results. The key here is how to split multiple classification tasks and how to integrate multiple classifiers.本剧故事发生在抗日战争中期的中条山战役前后，讲述了一个生活在富裕家庭的大少爷，在与日寇的浴血奋战中，与八路军不断摩擦，又并肩作战，逐渐成长为一个英雄的故事。同时，八路军女战士九儿，八路军连长大春，龙少的初恋情人苏云晓和丈夫文轩，龙少小兄弟石头，以及日军冷血狙击手芥川，都以神枪著名，因此这也是一部演绎神枪杀敌，充满传奇色彩的电视剧。接受过德国军事院校正规狙击手训练的龙绍钦是生在富裕家庭的大少爷国内抗战前线，怀着一腔杀敌报国的热血，却处处不适应，最后来到第一战区段旅。他第一次执行任务是率小分队狙击一个日寇的炮队，任务结束时，却遭遇日寇反包围，几乎全军覆没，只有龙绍钦一个人逃出生天。龙绍钦回到部队，怀疑有人出卖此次行动。可是负责情报工作的军统参谋长文轩却怀疑龙绍钦，为何只有他一个人逃回来？与此同时，龙绍钦的青梅竹马的恋人苏云晓也出现在这个旅，原来她嫁给了这个怀疑龙绍钦的参谋长，这让龙绍钦再次产生离去的想法。但是战场情况发生变化，龙少只能继续执行下一个任务。这次任务是掩护部队转移，八路军太岳军分