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IGF2, which encodes a protein functioning as a fetal growth factor and a cell mitogen, is expressed only from paternally allele in most tissues but from both alleles in adult liver. H1 9, which acts as an RNA, is a gene of unknown function and expressed only from maternally allele.

IGF2编码的胰岛素样生长因子-2是一种胚胎生长因子及细胞有丝分裂原，在人体内大多数组织中特异地表达父系来源的等位基因，而母源等位基因处于印记状态。H19表达一种功能尚不清楚的RNA，其印记状态与IGF2相反，目前发现H19在正常组织内均为母源等位基因表达，父源等位基因印记。

The incidence is increasing, The pathogeny and pathogenesis of AMD are unknown, and there is no effective therapeusis.

其病因和发病机制尚未完全明确，尚无非常有效的治疗方法。

It is our pathway into the Unknown.

这是我们进入未知的途径。

The location of his patrol car is unknown.

他的巡逻车位置是未知的。

For example, the message payload is unknown to the system, but we can still validate the message.

例如，信息的有效载荷是未知的系统，但我们仍然可以验证该邮件。

But for some time Mavra Kuzminishna remained standing with wet eyes before the closed gate, pensively shaking her head, and feeling a sudden rush of motherly tenderness and pity for the unknown boy-officer.

而玛夫拉·库兹米尼什娜还含着眼泪，久久地站在已经上了闩的便门后面，沉思地摇着头，突然觉得她对陌生的青年军官怀有母性的柔情和怜爱

But this way there is still some problems: The first is the classification of garbage awareness is not strong, looks like a trash can in fact classified and former effect is the same; second, the boundaries of recyclable and non-recovery is unknown, some of the more a strict classification is not as familiar to the students; third is the credibility of recovered, often encounter such a situation, was classified as environmental protection staff in clearing rubbish is often peremptorily, when the inverted together, it will not be garbage separation effect.

但这样的方式还是存在一定的问题：第一是垃圾的分类意识不强，看似分类的垃圾桶事实上和以前的效果是一样的；第二是可回收和不可回收的界限不明，一些较为严格的分类并非为同学们所熟悉；第三是回收的可信度，常常会遇到这样的情况，被分类的垃圾在环保人员清理的时候往往是一股脑的倒在一起，根本起不了垃圾分类的效果。

Based on the fundamental solution of two perfectly bonded elastic halfspaces, the boundary integral equation method is used to reduce the problem to a hypersingular integral equation in which the unknown function is the crack opening displacem...

首先根据双材料空间的弹性力学基本解，使用边界积分方程方法，在有限部积分的意义下导出了以裂纹面位移间断为未知函数的超奇异积分方程，并为其建立了数值法。

By measuring the time period of each oscillation of the unknown mass and comparing it to the period of a known mass, the crewmember's mass is calculated by the computer and displayed.

通过测量每一未知大规模振荡时间期间和比较来已知质量的船员的群众时期是由计算机计算和显示。

I doubted not — never doubted — that if Mr Reed had been alive he would have treated me kindly; and now, as I sat looking at the white bed and overshadowed walls — occasionally also turning a fascinated eye towards the dimly gleaming mirror — I began to recall what I had heard of dead men, troubled in their graves by the violation of their last wishes, revisiting the earth to pumish the perjured and avenge the oppressed; and I thought Mr Reed's spirit, harassed by the wrongs of his sister's child, might quit its abode — whether in the church vault or in the unknown world of the departed — and rise before me in this chamber.

我不怀疑—一也从来没有怀疑过——里德先生要是在世，一定会待我很好。此刻，我坐着，一面打量着白白的床和影影绰绰的墙，不时还用经不住诱惑的目光，瞟一眼泛着微光的镜子，不由得忆起了关于死人的种种传闻。据说由于人们违背了他们临终的嘱托，他们在坟墓里非常不安，于是便重访人间，严惩发假誓的人，并为受压者报仇。我思忖，里德先生的幽灵为外甥女的冤屈所动，会走出居所，不管那是教堂的墓穴，还是死者无人知晓的世界，来到这间房子，站在我面前。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。