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Amniocentesis is the removal of fluid from the amniotic sac .
羊膜穿刺术是从羊膜囊抽取羊水的技术。
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Others are born live , after struggling to break free from a membranous egg sac .
其余的是冲破膜状蛋囊而出生的
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The lungs consist of millions of tiny air sacs .
肺由数百万个小气囊组成。
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If you 're looking for a unique adventure , the Space and Aviation Center ( SAC ) is the place to be ．
如果你正在寻求一场独特的历险,那么航空航天中心就是你要找的地方。
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More than 750,000 have graduated from SAC , with many seeking employment in engineering , aviation , education , medicine and a wide variety of other professions ．
圣安德鲁学院的毕业生超过了75万人,其中许多人在工程、航空、教育、医药等各个行业工作。
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For the team has discovered that one large cavern4 , Sac Actun , is actually connected to another , Dos Ojos , creating a 350km-long cave .
已发现的被称作“白色洞穴（SacActun）”的巨大山洞其实与“双眼洞穴（DosOjos）”相连，共同构成了350公里长的山洞。
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SAC / 2 is one of successful symbolic processing systems .
SAC/2是成功的公式处理系统之一。
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Preliminary clinical application of sac induced whole-blood B cell transformation test
SAC诱导的全血B细胞转化试验在临床上的初步应用
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Design and Application of Cross Air Sac
十字气囊的设计与应用
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A Study on the Processing Method and Equipment of Orange Juice with Sacs
粒粒橙汁&加工方法和设备的研究
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A Method Improved to Observe the Air Sacs of Birds
鸟类气囊观察方法的改进
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Clinical Analysis of 101 Cases of Lacrimal Sac Diseases
泪囊疾病101例临床分析
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Malignant yolk sac tumor a pathological analysis of 25 cases
恶性卵黄囊瘤25例病理分析
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These abnormalities would cause the abnormal structure of mature embryo sac .
这些异常可能最终导致多种结构异常成熟胚囊的形成。
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Construction technology of SAC inner insulating sand pulp for external wall and its application
SAC外墙内保温砂浆施工技术及应用
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The Process of Embryo Sac Formation and its Stages Dividing in Rice
水稻胚囊形成过程与分期
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The Analysis of Clinical Prognostic Factors of Thirty Children Patients with Yolk Sac Tumor
30例儿童卵黄囊瘤临床预后因素分析
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Application Researches on SAc Solid State Acrylic Resin
SAc固态丙烯酸树脂应用研究
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Results Among them , 7 cases were with gestational sac ( 17.07 % );
结果胎囊型7例（占17.07%）；
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Analysis of delayed hematoma of the pacemaker sac in 13 cases
迟发性起搏器囊袋血肿13例分析
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Study on the Suspension Stability of Citrus Sacs in Orange Juice
粒粒橙汁中的汁胞悬浮稳定性的研究
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Clinicopathologic analysis of ovarian yolk sac cancer in 18 cases
卵巢卵黄囊癌18例临床病理分析
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TX Apply SACS [ Structural Analysis Computer System ] Software Package to Seismic Analysis of Steel Structural
利用SACS软件包进行钢结构的地震分析
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The times of correct reaction and the latency of SAC were observed .
分别观察各组幼鼠SAC行为的正确反应次数和反应潜伏期。
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Effects of posterior approaches on lumbar stability and spinal dural sac volume
腰椎后路手术对硬膜囊容量和脊柱稳定性的影响
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A Comparison between Shi and Sac 's Influences On Han Poems
《诗》骚对汉代诗歌影响对比研究
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Experimental results showed that as the surface area of SAC increased , the adsorption capacity for them increased ;
实验表明，SAC表面积增加则其吸附性能提高；
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Expression of vascular endothelial growth factor in chronic inflammatory mucosa of lacrimal sac
血管内皮生长因子在慢性泪囊炎粘膜中的表达
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I 'll remove the sac membrane containing the organs .
我要把包裹着那些器官的膜切掉。
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Application of pericardium transplantation in the plastic surgery of conjunctival sac
心包膜移植在结膜囊成形术中的应用