Amorphous forms of C will first be compared and contrasted with amorphous Si, the differences in chemical bonding being emphasized in relation to atomic structure. After a brief discussion of ordered layers of graphit...Amorphous forms of C will first be compared and contrasted with amorphous Si, the differences in chemical bonding being emphasized in relation to atomic structure. After a brief discussion of ordered layers of graphite and of BN, some attention will be focused on BN cages and polymers and on C nanotubes. Finally properties of Na metal clusters will be discussed, including fission of such charged clusters展开更多
The Sliding Bike is a patented new product that perfectly combines bike functionality and mechanical principles.Our models before 2014 used only horizontal sliding mechanism,and they were awarded invention golden meda...The Sliding Bike is a patented new product that perfectly combines bike functionality and mechanical principles.Our models before 2014 used only horizontal sliding mechanism,and they were awarded invention golden medals in Seoul,Geneva,Pittsburgh,and Taipei,and the Japan GD展开更多
A father worked as an accountant for the Air National Guard.Despite a regular adequate income hehad a “poor” mindset,always unhappy about money matters and very veal about it.One year at an air show,in a crowd of ma...A father worked as an accountant for the Air National Guard.Despite a regular adequate income hehad a “poor” mindset,always unhappy about money matters and very veal about it.One year at an air show,in a crowd of many close-by people,his daughter looked up at him andsaid,“Dad,what do you do out here?”展开更多
special(1y),especial(ly),particular(ly)和 specifical(ly)出现率较高,而且都具有“特殊”的意思,容易混淆,现试辨它们之间的异同。1.special:①特别的,特殊的,表示某物特殊,比其同类事物更重要或更好(more important or better than ...special(1y),especial(ly),particular(ly)和 specifical(ly)出现率较高,而且都具有“特殊”的意思,容易混淆,现试辨它们之间的异同。1.special:①特别的,特殊的,表示某物特殊,比其同类事物更重要或更好(more important or better than other things of its kind)。例如:Would she be prepared to undertake a special job for the organization?她愿意并且能够担任机构的一项特殊工作吗?What is so special about the year 2000?2000年有什么特殊意义吗?I had no special reason to confide in him.展开更多
文摘Amorphous forms of C will first be compared and contrasted with amorphous Si, the differences in chemical bonding being emphasized in relation to atomic structure. After a brief discussion of ordered layers of graphite and of BN, some attention will be focused on BN cages and polymers and on C nanotubes. Finally properties of Na metal clusters will be discussed, including fission of such charged clusters
文摘The Sliding Bike is a patented new product that perfectly combines bike functionality and mechanical principles.Our models before 2014 used only horizontal sliding mechanism,and they were awarded invention golden medals in Seoul,Geneva,Pittsburgh,and Taipei,and the Japan GD
文摘A father worked as an accountant for the Air National Guard.Despite a regular adequate income hehad a “poor” mindset,always unhappy about money matters and very veal about it.One year at an air show,in a crowd of many close-by people,his daughter looked up at him andsaid,“Dad,what do you do out here?”
文摘special(1y),especial(ly),particular(ly)和 specifical(ly)出现率较高,而且都具有“特殊”的意思,容易混淆,现试辨它们之间的异同。1.special:①特别的,特殊的,表示某物特殊,比其同类事物更重要或更好(more important or better than other things of its kind)。例如:Would she be prepared to undertake a special job for the organization?她愿意并且能够担任机构的一项特殊工作吗?What is so special about the year 2000?2000年有什么特殊意义吗?I had no special reason to confide in him.
