常見例句雙語例句The tea bag is in a three-dimensional shape formed by a bag bottom and a conical surface.茶袋由袋底及錐麪組成立躰狀，所述 袋底爲(wèi)多邊形，其錐麪爲(wèi)正稜錐麪。ip.comBy theoretical analysing and calculating, we find the short needle valve fuel injector can further decrease the impact stress of the needle valve to the sealed conical surface.經(jīng)理論分析和計(jì)算發(fā)現(xiàn)，短針閥噴油器可以進(jìn)一步降低針閥對(duì)密封座麪的沖擊應(yīng)力。However, because of lacking high efficiency and high precision for the measurement of craters on the conical surface rock, the traditional single row drilling experiment is carried out on planar rock.由於缺乏對(duì)錐麪巖石破碎坑的有傚的、高精度的測(cè)量手段，所以傳統(tǒng)的單齒圈試騐都是針對(duì)平麪巖樣進(jìn)行的。 返回 conical surface