膜骨

Membrane technique can promote bone regeneration.

膜技术的应用有利于骨缺损的愈合。

Result The model consisted of enamel, dentin, elements pulp, simulated periodontal membrane and simulated alveolar bone.

结果 建立了上颌第一磨牙有限元模型，包括牙釉质、牙本质、牙髓、模拟牙周膜、模拟牙槽骨。

RESULTS:①Histological analysis showed membrane bone formation and endochondral bone. A mass of chondrocytes appeared in bony callus of the OVX group at days 21 and 28 after operation.

结果：①组织学观察结果：显示骨折处膜内成骨和软骨成骨两种方式，术后第21天及28天时去势组骨痂中仍可见大量软骨细胞。

Based on this background, maxillary central incisors was prepared as residual roots model, the materials which has the similar physical properties and capabilities as that of the alveolar bone and periodontal membrane respectively were chosen.

基于上述情况，本实验以人离体上中切牙制备实验模型，以力学性能近似的材料模拟牙槽骨、牙周膜和桩冠修复后的上前牙，制作与上前牙口内受力角度相同的夹具及压力头，形成加载测试系统。

They can also arise in endochondral bone; or primitive mesenchymal cells in the brain, meninges, membranous bone, or soft tissue.

它们可以起源于软骨内骨、或者脑内的间充质细胞、脑膜、膜内成骨或者软组织。

Joint friction and micromotion should inevitably form the biofilm and debris around the prosthesis, which will provide a breeding ground for the propagation of pathogenic microorganisms. On the contrary, the destruction of bone around the joint caused by infection is one of the reasons of joint sinking.

在一定条件下，术后关节感染与假体松动又是相互促进的，关节的摩擦和微动，必然会在假体周围形成界膜和微粒，这就为病原微生物的繁殖提供了条件；反之，关节周围的感染所造成的骨破坏，也是关节松动下沉的一个原因。

This kind of structure of micropyle has been proved by computer simulation to be favourable for the sperm to agglutinate and enter the micropyle. So, another kind of teleost is found after Misgurnus anguilicaudatus, in which exist unnegligible mechanical dynamic factors besides the chemical one during the sperm entry into the micropyle.

通过电子计算机模拟，验证了卵膜孔的这种结构，为精子的云集和进入精孔管所提供的有利条件，从而，于泥鳅之后又发现了一种真骨鱼，其精子入卵除化学因素外，还存在着不容忽视的机械动力因素。

In response to repetitive strain and inflammation, the synovial l-z joints can fill with fluid and distend, resulting in pain from stretching the joint capsule.71 Distension of the articular recesses can also compress the exiting nerve root in the neural foramen or spinal canal, especially when the foramen is already narrowed by joint hypertrophy and/or osteophytes.

反复的应力与炎症反应，可使滑膜l-z关节充满滑液并扩张，导致关节囊收到牵拉产生疼痛。关节囊隐窝的扩张可以压迫神经孔出的神经根出口或压迫椎管内脊髓，尤其当由于关节肥大和/或骨赘形成已经存在椎间孔狭窄时发生率更高。

OBJECTIVE: To report our experience with first-trimester screening for trisomy 21 by using the combination of nuchal translucency thickness and nasal bone assessment.

目的：报道我们在用颈部透明膜厚度和鼻骨在筛查妊娠早期Down综合征方面的经验。

OBJECTIE: To report our experience with first-trimester screening for trisomy 21 by using the combination of nuchal translucency thickness and nasal bone assessment.

目的：报道我们在用颈部透明膜厚度和鼻骨在筛查妊娠早期Down综合征方面的经验。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷