- basal
- basic
- basilaris
- fundamental
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基底的的英文
例句与用法
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- From the studying on the growing process of the basement and the spreading of the fracture belt , the research discovered that the distribution spreading expression of the oil - gas and the delta in ordos basin were strictly controlled by the basement fracture belt extended in the direction of north - east and east - west
通过对基底的发育和断裂的研究发现，鄂尔多斯盆地的油气田分布轨迹及三角洲严格受北东向及东西向基底断裂的控制。 - However , both of them have disadvantages . mo tip feas is fabricated by evaporating tip cathodes on base , so it has bad coherence with the base . on the other hand , the characteristics of silicon result in the bad heat stability , bad emission reliability , and low current density
然而,这两种阴极存在各自的缺点,如钼尖锥是蒸镀在基底上的,所以与基底的附着力不强;而硅的特性又决定了其热稳定性差,发射的可靠性低,发射电流有限。 - The cathodes both of the prepared tungsten - based barium - tungsten cathode and mixed metal barium - tungsten cathode have , not only high current density , but also a long life , simplified procedure and stable performance , and so on . and we made certain two good additives cr2o3 and ni2o3 that make the cathode performance more excellent
2 )对不同元素配比的二元和三元混合阴极基底的制备工艺和发射性能开展了实验研究，在增大发射能力，延长寿命和降低烧结温度等方面有重要进展，取得了有价值的阶段成果。 - Methods the improvements of the operation included ; a supertemporal conjunctival flap 180 with its base at the fornix , the puncture points were located at 8 and 2 o ' clock ( right eye ) or 10 and 4 o ' clock ( left eye ) , the straight needle and shovel needle with prolene suture were conducted into the eye via two different side of corneal incision and out of the eye under the scleral flap at 8 and 2 o ' clock ( right eye )
方法术式改进包括：颞上方180 、以穹隆为基底的大结膜瓣；穿刺点选择8点及2点位（右眼）或10及4点位（左眼） ；用聚丙烯缝线所带直针及铲针，从角膜切口两端进入眼内，由8点及2点位巩膜瓣下穿刺出针。 - During the yanshanian phrase , the area is in the condition of contractional background , with multi - staged tectonic reversion . 5 . through studying the origin of volcanic rocks and the characteristics of magma evolution , it concludes that there exist 3 originated areas of magma - from mantle , crust , and mantle - crust exchange . the basic magma of nandaling volcanic rocks of early jurassic is derived from upper mantle ; the magma of tiaojishan volcanic rocks of mid jurassic is formed in the contractional tectonic setting , and derived from the transition zone of crust and mantle interaction ; the acid magma of l
5 、通过岩石化学、微量元素、稀土元素的研究，探讨了不同级别节律的火山岩成因、岩浆演化等特征，认为本区燕山期火山岩有三个岩浆源区，即地幔源、地壳源和壳幔混源，早侏罗世的南大岭旋回的基性岩浆，起源于上地幔；中侏罗世髫髻山旋回火山岩是在相对挤压环境中，岩浆起源于壳幔过渡带；晚侏罗世无负eu异常的酸性岩浆来源于下地壳的古老结晶基底的局部熔融，有负eu异常的酸性岩浆来源于上地壳的局部熔融；早白垩世火山岩基性岩浆起源于上地幔，中性岩浆起源于下地壳底部的壳幔过渡带。