以上来源于: WordNet
N-COUNT Pecans are nuts with a thin, smooth shell that grow on trees in the southern United States and central America and that you can eat. 美洲山核桃
The density of PE can be divided into general density and specialty density, in accordance with it, the two methods of measuring them are formed.
体育课的密度可分为一般密度和专项密度两类，与之相对应地形成了两类密度的测定方法。
UHM-PE can replace carbon steel, stainless steel, bronze, etc. It can be used in the fields, such as textile, papermaking, food processing, transportation, ceramics, coal, etc.
UHM - PE可以取代碳钢、不锈钢、青铜等，可用于纺织、造纸、食品加工、运输、陶瓷、煤炭等领域。
The clinical presentations of PE can be from without evident symptom to sudden death. The most frequent symptom is breathlessness resulting from hypoxemia with incidence of about 80%-90%.
临床表现可以从没有明显症状到发生猝死，最常见的是呼吸困难，发生率约80％-90％。
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