長頸屬 的英文怎麼說
中文拼音 [zhǎngjǐngzhǔ]
長頸屬
英文
filicolis-
But it is impossible for the traditional electroforming to be widely used due to the long process time, the poor metal distribution which is often seen. nano metal has special performance of mechanics and physics, but the making of nano metal block is difficult, and it ' s making method is not perfect, so the study of nano metal block is very difficult. man pay more attention to rapid prototyping which is a new machining method, but to make metal accessory using rapid prototyping is very difficult, it restricts development of rapid prototyping
目前電鑄技術存在著加工時間長，鑄層均勻性差等缺點，嚴重製約著電鑄技術的應用與發展；納米金屬具有特殊的力學和物理性能，但是納米金屬塊體的制備有一定的難度，而且制備方法也不成熟，因此對納米金屬塊體性能的研究有一定的難度；快速成型作為一種新型的加工方法，越來越受到重視，但現在的快速成型技術對製造金屬零件有很大的難度，這也是制約快速成型技術快速發展的一個瓶頸。Now in most cities in china, traffic jam is an outstanding problem. intersections have been the bottlenecks of the urban traffic. the average stop delay of vehicle at the main intersections is too long, while it ' s one of the actual facts that the traffic control mode at these intersections is classified as spot control
目前我國大多數城市交通擁塞問題突出，尤其是道路交叉口成為城市交通的瓶頸，車輛在主要交叉口上的平均延誤太長，而實際的事實之一是這些交叉口的交通控制方式大都屬于單點控制。
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