您要查找的是不是：
- principal composition series of subgroups 主组成子群列
- kernel principal composition analysis (KPCA) 核主成分分析
- analysis of principal composition 主成份分析
- The principal compositions of soluble materials of the Ordovician oil field water in Tahe oilfield are consistent with sea water, suggesting its marine origin. 塔河油田奥陶系油田水的可溶物质主要成分与海水一致,表明其主要为海相成因。
- My wages are the principal source of my income. 薪金是我收入的主要来源。
- The principal shareholder ask for a meeting. 主要股东们要求召开会议。
- The agent spoke on behalf of his principal. 代理人代表他的委托人说话。
- Keys are available on application to the principal. 向校长申请就可得到钥匙。
- The principal part in a duet or ensemble composition. 第一声部合(重)奏或合(重)唱中最主要的部分
- He sweated out his composition in several hours. 他苦干了几个小时才写出了作文。
- She's been downgraded (from principal) to deputy. 她已(从校长)降为副校长。
- Our principal problem is lack of time. 我们的主要问题就是缺少时间。
- He wrote a composition or (he) read an essay. 他写作文或读散文。
- His composition is far superior to mine. 他的作文比我的好多了。
- She drank in every word of the principal's lecture. 她全神贯注地听校长演讲的字字句句。
- John informed the principal against Paul. 约翰向校长告发了保罗。
- The central or principal vein of a leaf. 中脉中心的或主要的叶脉
- The principal discouraged unexcused absences. 校长不准无故缺课。
- Rubber is the country's principal export. 橡胶制品是该国主要的出口产品。
- The principal has a very tight schedule. 校长的日程表排得满满的。
