常見例句雙語例句This section plane was found and measured on the spot during the 1/50000 areal geological investigation of Sihai breadth.在參加1∶ 5萬四海幅區(qū)域地質(zhì)調(diào)查過程中，發(fā)現(xiàn)并實測了該剖面。It is shown that the optimal hydraulic section for compound canal has smaller section area and narrower breadth of water surface than trapezoidal canal by calculation and comparison.并通過算例比較證實，復合斷面水力最佳斷面的面積和水面寬度比梯形水力最佳斷面的小。 返回 breadth of section