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- The first principal normal stresses can lead to grinding crack which generates behind the abrasive grain in the plane perpendicular to grain motion. 在磨粒後方，受第一主應力的作用，產生垂直磨削方向的磨削裂紋。
- Principal Normal Surfaces of Curves 曲線的主法線曲面
- spherical indicatrix of principal normal 吱線球面指標
- My wages are the principal source of my income. 薪金是我收入的主要來源。
- The principal shareholder ask for a meeting. 主要股東們要求召開會議。
- The agent spoke on behalf of his principal. 代理人代表他的委託人說話。
- Keys are available on application to the principal. 向校長申請就可得到鑰匙。
- The computer has a normal qwerty keyboard. 這台計算機有標準的英文鍵盤。
- She's been downgraded (from principal) to deputy. 她已(從校長)降為副校長。
- normalized complex wave amplitude 歸一化複數波振幅
- The situation has returned to normal in the city. 這座城市的局勢已恢復正常。
- Our principal problem is lack of time. 我們的主要問題就是缺少時間。
- The normal return fare to New York is fifty-six. 去紐約的來回票標準價是56元。
- She drank in every word of the principal's lecture. 她全神貫注地聽校長演講的字字句句。
- John informed the principal against Paul. 約翰向校長告發了保羅。
- The central or principal vein of a leaf. 中脈中心的或主要的葉脈
- The principal discouraged unexcused absences. 校長不準無故缺課。
- Everything is absolutely normal. 一切完全正常。
- Rubber is the country's principal export. 橡膠製品是該國主要的出口產品。
- The principal has a very tight schedule. 校長的日程表排得滿滿的。
