道床層 的英文怎麼說
中文拼音 [dàochuángcéng]
道床層
英文
ballast covering-
The experiments show that nacre, a type of natural nano - bioceramic material, when used as bone implant for reconstruction of bone defects, is not only biocompatible and biodegradable, but also osteoconductive and osteoinductive
本文根據國外文獻有關利用珍珠層作為骨植入材料的研究報道，就珍珠層的生物相容性和可降解性，及其所具有的骨誘導和骨傳導作用的動物臨床實驗結果，進行了綜合分析和論述。Dig jade is it leave riverbed in river valley terrace, do beach to refer to, ancient river and alluviation, diluvian gravel that fan have dig seeking and d jade gravel of the layer in front of the mountains the jade of these places is brought by the flowing water too
挖玉是指離開河床在河谷階地干灘古河道和山前沖積洪積扇上的礫石層中挖尋和闐玉礫。這些地方的玉也是由流水帶來的。The essential cause that induces subway vibration is the inter action between the train ’ s wheels and rail. through the sleeper, ballast bed, roadbed and soil layer, the vibration spread to far place
地鐵振動產生的根本原因是由於輪軌的相互作用，再通過軌枕、道床、路基和土層依次向遠處傳播。On the first day, when, getting up early in the morning, he came out of the shed into the dawn, and saw the cupolas and the crosses of the new monastery of the virgin, all still in darkness, saw the hoar frost on the long grass, saw the slopes of the sparrow hills and the wood - clad banks of the encircling river vanishing into the purple distance, when he felt the contact of the fresh air and heard the sounds of the rooks crying out of moscow across the fields, and when flashes of light suddenly gleamed out of the east and the suns rim floated triumphantly up from behind a cloud, and cupolas and crosses and hoar frost and the horizon and the river were all sparkling in the glad light, pierre felt a new feeling of joy and vigour in life such as he had never experienced before
第一天，他一大早就起了床，走出棚子，頭一眼就看見新聖母修道院開始還發暗的圓屋頂和十字架，看見覆蓋著塵土的草上的寒露，看見麻雀山的丘陵，看見隱沒在淡紫色遠方的，長滿了樹木的，蜿蜒著的河岸，他覺得空氣清新，沁人肺腑，可以聽到從莫斯科飛越田野的烏鴉的啼叫聲，一會兒，在東方天際邊，突然噴射出萬道霞光，一輪紅日從雲層里漸漸顯露出來。於是，圓屋頂，十字架露水遠方和那條小河所有這一切都在陽光下閃爍，這時，皮埃爾感覺到一種從來都沒有經歷過的，全新的，生活的喜悅和力量。In which, it gives inquiring of the construction of deep - water foundations and the usage of floating crane. the construction program of bridge pier foundation will be fixed according to the water depth. if the water depth is less than 4m, pier foundation will adopt the method of building island by earth filling ; if the water depth is more than 4m and there is over burden at river bed, at the same time, it has sufficient bearing capacity to load steel pipe pile, the steel pipe pile platform will be adopted
其中，對深水基礎的施工及浮吊的使用進行了探討，根據水深確定橋墩基礎的施工方法，對水深不超過四米的橋墩基礎，採用填土築島的方法：對水深大於四米，河床有覆蓋層，且能保證鋼管樁具有足夠的承載力的橋墩，採用鋼管樁平臺；對主河道上河床沒有覆蓋層，鋼管樁無法插打的橋墩，採用浮式平臺。New york ( reuters health ) dec 22 - positron emission tomography ( pet ) following infusion of [ 18f ] fluorodeoxyglucose ( fdg ) is an effective means of predicting response to neoadjuvant chemotherapy in patients with breast cancer, french researchers report in the december 1st issue of the journal of clinical oncology
紐約（路透社健康） 12月22日- 《臨床腫瘤學》雜志12月第1期上法國研究人員報道，對乳腺癌患者新輔助化療腫瘤的反應進行預測，正電子發射斷層攝影（ pet ）輸注[ 18f ]氟脫氧葡萄糖（ fdg ）是一種有效手段。Abstract : for high arch dams in valleys with the characteristics of high water head, large discharge and large power, the problems of energy dissipation and scour prevention are serious. based on scientific studies, new comprehensive measures are proposed, including dispersion of discharge to waken wallop of the current, and reinforcement of riverbed to enhance the erosion - resistance. the measures can be used to solve the problem of energy dissipation properly. a typical layout scheme has been proposed in which slotted bucket with diversion teeth, double deck with pores, and cushion pool are considered practice has proved that the scheme is reliable and the effect of energy dissipation is obvious
文摘:高拱壩泄洪消能的特點是壩高落差大，流量大，功率大，位於河谷狹窄地區，泄洪消能與防沖問題突出.經科學研究，採用「分散泄洪，削弱水流沖擊力，加固河床，增強河道抗沖能力」的綜合治理措施，較好地解決泄洪消能布置問題.提出了表孔大差動坎加分流齒、雙層多孔、水流撞擊、下設水墊塘聯合消能的典型布置方案，經實踐證明，方案可靠，消能效果好分享友人