在15周到18周之间有两个极好的检查可以选择来甄别染色体异常和神经管缺损症状，比如：唐氏综合症和脊柱裂。
There are two test options available between the 15th and 18th weeks to screen for chromosomal abnormalities and neural tube defects such as Down's syndrome and spina bifida.
日本的天文学家说，最知名星云之一的人马座三裂星云，它的壮丽景观可正是由两朵气体和尘埃云的碰撞造成的。
Astronomers in Japan say one of the best-known nebulae-the Trifid, in the constellation sagittarius-owes its splendor to a smashup between two clouds of gas and dust.
我的鼻梁骨断了，颅骨骨折，颈部有两根骨头被高温熔化而接在一起，四根肋骨骨裂，脊椎上也有一处骨折，左肩关节脱臼，这处伤至今未曾痊愈。
I had a broken nose, a skull fracture, two fused bones in my neck, four cracked ribs, a fracture in my spine and my left shoulder is still separated.
忽然殿里的幔子，从上到下裂为两半。
At that moment the curtain of the temple was torn in two from top to bottom.
殿里的幔子，从上到下裂为两半。
And the veil of the temple was rent in twain from the top to the bottom.
真正危险的是，当两大阵营酣战正烈时，世界却已变得更加四分五裂——一望无际的“停滞之海”包围着硕果仅存的高生产率岛屿。
The big danger is that, while optimists and pessimists battle it out, the world becomes ever more divided between islands of high productivity surrounded by a vast ocean of stagnation.
两剖面复成分砾岩杂色沉积、泥裂、石膏层等为该区可能存在的干旱气候提供了依据。
The occurrence of variegated polymictic conglomerate sediment mud cracks gypsum strata and so on can provide evidences for aridity climate in western liaoning.
这两种趋势结合起来动摇了当代大学的基础，和其他貌似坚不可摧的机构被四分五裂的方式大同小异。
In combination, these two trends threaten to shake the foundation of the modern university, in much the same way that other seemingly impregnable institutions have been torn apart.
出生于中国南部湖南省的一个孩子患有严重的横向面裂，这就意味着他的嘴巴裂到两耳根部。
The child, born in southern China's Hunan Province, suffered from a severe transverse facial cleft, which means there are two huge gaps appearing from both sides of his mouth leading towards his ears.
计世资讯分析师彭海翔说，“在未来一到两年很可能会出现大量的收购，使四分五裂的市场集中起来。”
"A large number of acquisitions are very likely to take place in the next one to two years, and this may make the splintered market concentrated, " said Peng Haixiang, an analyst with CCW Research.
它就像电池的两极，或是原子的飞裂。
It is like the two poles of a battery, or the splitting of an atom.
使两人的感情出现了裂疚。
Caused two person of sentiments to present the crack chronic illness.
叶片具两面有鳞的，全缘的鳞片，或浅裂的。
Leaf blade with both surfaces scaly, scales entire, or lobed.
两次的花柱2半裂，每分枝具一匙形的或头状柱头。
Style twice 2 - cleft, each branch with a spatulate or capitate stigma.
在动态压缩实验的基础上，本文对两种典型推进剂层裂过程进行了研究。
The dynamic response of the above two kinds of propellants are studied by dynamic compaction and spall experiment.
在经过高应力三角形波实验的软回收样品上，发现了两个层裂面。
Two spall planes were observed in the soft recovered sample for the high stress triangular wave experiment.
方法结合超声发现并经病理证实的两例典型腹裂畸形胎儿，分析探讨胎儿腹裂的超声诊断的临床意义。
Methods Through the two cases of Fetal malformation gastroschisis what is found by ultrasound and confirmed by pathologically, to explore the clinical significance of ultrasound diagnosis.
本文建立了水力压裂过程中变排量注入一种和顺序注入两种幕律液体情况下水平裂缝几何尺寸的数值计算方法。
A numerical solution method is suggested for the calculation of the geometry of horizontal fractures induced hydraulically by injecting, at variable rates, in sequence of power-law fracturing fluids.
通过实际地层破裂压力验证，两种模型的预测结果令人满意，达到了较好的压裂酸化增产效果。
Tested by actual formation fractual pressure, the prediction result of the two models is rather satisfactory and better effect of fractual acidation is achieved.
介绍了连通井组的两种主要类型：水力压裂连通井组与定向钻井连通井组。
Two major types of communicated well pairs are introduced, namely hydraulic fracturing communicated well groups and directional drilling communicated well pairs.
依据压裂曲线，利用破裂压力孔隙弹性计算模型，计算得到了在两个水平主应力方向的弹性应变量；
Basing on fractureing calculation model with pore elasticity theory, the elastic strain in horizontal direction has been determined with hydraulic fractureing curve.
在两口井采用转向剂，实施强制转向重复压裂，获得了成功，达到了控水稳油，提高采收率的目的。
In two of the Wells, we successfully used diverting agent to force fluid to divert, and realized the water controlling, oil increase, and oil recovery enhancement.
裂为两半的飞贼中，正是那块中间有一道据齿状裂缝的黑石头。
The black stone with its jagged crack running down the center sat in the two halves of the Snitch.
治疗前后分别测量两组患者患眼的眼球突出度与睑裂宽度并观察症状及眼征情况。
Then the degree of exophthalmus and width of palpebral fissure in two groups were measured and their symptoms and ocular signs were observed before and after treatment.
水工混凝土材料抗裂性(抗裂指数)与水工混凝土结构抗裂性(抗裂安全系数)是两个不同的概念，不能混淆。
The crack-resistance of hydraulic concrete material (crack-resistance index) and hydraulic concrete structure (safety factor of crack-resistance) are two different concepts, which can not be obscured.
从两相流的角度出发，将泡沫压裂液的气相处理成气泡相并建立两相欧拉颗粒流模型来研究泡沫压裂液的流变性。
The rheology mechanism of foam fracturing fluid was studied by Eulerian-Eulerian two-phase fluid method with the gas phase being treated as 'granular'.
利用柔度变化率方法确定起裂时间，分别得到在两种加载速率下CFRP、GFRP层板的动态断裂韧性。
With the compliance changing rate method, the crack initiation time and the dynamic fracture toughness of CFRP and GFRP laminates were obtained at two kinds of strain rates separately.
讨论了伤害煤层渗透率的两大因素：压裂液堵塞煤层割理；煤基质吸附压裂液而膨胀。
Blockage of coal seams by fracturing fluids (FFs) and swelling of coal matrix owing to FF adsorption are discussed and considered to be the basic factors for coalbed permeability damage.
讨论了伤害煤层渗透率的两大因素：压裂液堵塞煤层割理；煤基质吸附压裂液而膨胀。
Blockage of coal seams by fracturing fluids (FFs) and swelling of coal matrix owing to FF adsorption are discussed and considered to be the basic factors for coalbed permeability damage.
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