楔形石 的英文怎麼說
中文拼音 [xiēxíngdàn]
楔形石
英文
quoin-
Here we use robotically - controlled micromanipulators and extremely sharp glass needles to machine the aerogel, and extract tracks in tiny doorstop - shaped wedges of aerogel that we call " keystones "
在此我們用自動控制的顯微操作器和極其尖銳的玻璃針來加工氣凝膠，並取出含有軌跡的一小塊楔形凝膠，我們稱之為「楔石」 。Strobilus ( pl. strobili ) a group of sporophylls ( spore - bearing leaves ) arranged around a central axis, found in gymnosperms, lycophyta ( clubmosses ), and sphenophyta ( horsetails )
球果：孢子葉向中軸聚攏形成的結構，存在於裸子植物門植物、石松亞門植物（石松）和木賊綱植物中（楔葉類） 。In the clubmosses and horsetails only one type of strobilus is formed, while in the gymnosperms female megastrobili and male microstrobili both develop
石松和楔葉類只形成一種類型的球果，然而裸子植物既有雌性的大孢子葉球也有雄性的小孢子葉球。One of the wedge - shaped stones forming the curved parts of an arch or a vaulted ceiling
拱楔塊用於形成拱或穹窿的曲線部分的楔形石頭中的一塊In order to solve the shortcoming of traditional explosion w ; dge - shaped excavation in da ' anshan mine, improve the rate of excavation and reduce the consumption of explosive materials, a series of excavation shapes are applied and experimented in the rock tunnel excavate
針對大安山煤礦傳統的楔形掏槽爆破方式存在的弊端，本文提出在該礦進行新型掏槽實驗研究，用以增加巖石巷道掘進效率和減少掘進爆破材料消耗。Results the occlusion contact data and graph of wedge - shaped teeth defect had the features of trauma occlusion. 42. 97 % of them has the larger axial gradient degree, 96. 09 % of them has abration in different classes, 46. 29 % missing the front teeth and 57. 03 % missing the buccal teeth
方法採用臨床物理檢查和石膏模型測量，確定楔狀缺損牙軸傾度、磨損指數、牙缺失等指標；採用計算機圖像處理技術，自行編制軟體程式及硬體系統，測試被檢光（牙合）片，分析並提取楔狀缺損牙接觸（牙合）力、面積、接觸點（牙合）應力等資料和圖形信息。As to the basalt rock tunnel excavation, the gronlund shape is alright, the second shape is wedge - pentagon shape and the diamond shape is unsuited for basalt rock. through the analysis of experimental data and the results of explosion, the explosion rate is up to 85 %
對于玄武巖通過實驗結果和數據統計分析，得到gronlund （即變五星）掏槽比較適合於玄武巖巖石巷道掘進，其次是楔形+五星掏槽，而菱形掏槽在玄武巖中不適宜， gronlund （即變五星）掏槽形式其爆破效率達到85 %以上。分享友人