您要查找的是不是：
- the principal section; principal cross-section 主截面
- This rotation can be simplified by plotting the positions of the principal sections and principal axis on a stereographic net as deseribed by Jessop and Wells from the rotations recorded. 按照杰索普和威尔士所论述的方法，根据记录下来的转动角，把主截面和主轴的位置画到一个极射赤平投影网上，可使上述过程简化。
- This rotation can be simplified by plotting the positions of the principal sections and principal axis on a stereographic net as described by Jessop and Wells from the rotations recorded. 按照杰索普和威尔士所论述的方法,根据记录下来的转动角,把主截面和主轴的位置画到一个极射赤平投影网上,可使上述过程简化。
- 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。
- She's been downgraded (from principal) to deputy. 她已(从校长)降为副校长。
- He has lived one section of miserable life. 他过了一段悲惨的生活。
- Our principal problem is lack of time. 我们的主要问题就是缺少时间。
- Signals control each section of the railway track. 各种信号控制着铁路轨道的每个部分。
- 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。
- A hinged or removable section for a table top. 活动桌面桌子上部有铰链连接或可移动的部分
- 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。
- First the surgeon performed the section of the blood vessel. 外科医生首先切开血管。
- The principal has a very tight schedule. 校长的日程表排得满满的。
- Our school gave a reception to our new principal. 我们学校为新校长举行了欢迎会。
