外被

But when it into a light beam was a small acute angle, the light energy will be returned only on the surface of reflection, but merely illuminate the thin cell wall.

但是当这束光被折成一个很小的锐角时，光的能量就会仅从细胞表面反射回来，而仅仅照亮薄薄的细胞外壁。

In addition, the compound does not appear to be a substrate for P-gp efflux, resulting in a relatively long duration of reversal activity in resistant cells even after the modulator has been withdrawn.

另外，所述化合物并未表现出为P-gp外排的底物，导致逆转活性在抗性细胞中具有相对长的持续时间，即使是在调节物被撤去之后。

P2X receptors are membrane ion channels activated by the binding of extracellular adenosine triphosphate.

P2X受体是一些膜上的被细胞外三磷酸腺苷激活的离子通道。

To ensure close adhibition of connecting board, screwing should start from center to outside, that is, screwing from enlarged center to skirting area. To avoid coating's influence on tensile force, screwing work should be finished on one day. And to decrease prestress' difference of high-tension bolt, bolt screwing runs in two steps: primary screwing and final screwing. For large-scale joint with great amount of bolts demands a second screwing.

为使被连接板叠密贴紧，应从螺栓群中央顺序向外施拧，即从节点中刚变大的中央按顺序向下受约束的边缘施拧，为防止高强度螺栓连接副的表面处理涂层发生变化影响拉力，应在当天终拧完毕，为减少先拧后拧的高强度螺栓预拉力的差别，其拧紧必须分为初拧和终拧两步进行，对于大型节点，螺栓数量较多，则需要增加一道复拧工序。

However, chloroplast matK genes are indispensable since in nonphotosynthetic parasitic plant, Epifagus virginiana and fren, Adiantum capillus-veneris which chloroplast genome has rearrangememt, the chloroplast matK is functional even being a free-standing from with dismissed trnK exons.The chloroplasts of Psilotum, moss and liverworts all have trnK5'-matK-trnK3' structure, but it is found that matK is a pseudogene in hornwort Anthoceros formosae. Little is known in other lower land plants, it is the purpose of this thesis to examine the presence of chloroplast matK gene is these taxa.

叶绿体trnK5'-matK-trnK3'的结构在高等植物相当一致，但先前研究发现两个matK脱离trnK而存在的例子，像是叶绿体严重退化的寄生植物Epifagus virginiana及因叶绿体基因重组而导致trnK外显子丢失的铁线蕨，它们的matK仍然具有完整的开读框，显示了matK的确十分重要而不可缺失，藓苔类和松叶蕨也被证实具有trnK5'-matK-trnK3'的结构，但是在角藓中却发现其matK是伪基因。

Jimmy Red Jones, whom I had appointed adjutant general of the Arkansas National Guard after he'd had a long career as state auditor, said I had alienated the voters with too many young beards and out-of-staters in important positions.

吉米。雷德。琼斯在州里当了很长时间的审计员之后，曾经被我任命为阿肯色国民警卫队总指挥，他对我说，我任用了太多蓄着胡子的年轻人和州外人士担任要职，因而疏远了选民。

It's likely the Chinese miners benefited from a large air pocket or access to air from outside.

王家岭煤矿的遇险矿工之所以能够存活下来，预计是因为井下有相当大的空间未被水淹没，也可能是因为他们能呼吸到井外的空气。

The rotating untapered wings had a gradually decreasing pitch from root to tip in the manner of an airscrew, and no control method, apart from rpm adjustments, appears to have been intended for adjusting the wing characteristics.

旋转untapered翅膀曾在一个螺旋桨的态度，从根到尖间距逐渐减少，没有控制的方法，从转速调整外，似乎已被用于调整翼特点。

The results offer the condition that these plants of Ajuga could be distinguished by size and ornamentation of exhymenine.

结果表明，同属三种植物的形态特征相似，可通过叶形及花期是否具基生叶，花萼的形态，花冠颜色以及茎的生长方式和植株被毛情况等予以鉴别；通过对三种植物的花、根、茎、叶及全草粉末的组织构造观察，认为种间差异较小，可依据毛茸的分布及形态特征和茎的木化程度不同加以鉴别；对三者花粉粒进行了扫描电镜观察，发现其大小和外壁纹饰具有明显差异，为三者的鉴别提供了有力的依据，也为该属的分类及植物花粉形态研究提供了花粉形态学方面的资料。

Parkinson's diseaseis basically a degeneration disorder of basal ganglia, and is characterized by tremor, akinesia, and rigidity, and sometimes may accompany with cognitive impairment similarity frontal lobe dysfunction.

中文摘要巴金森氏症是一种基底核的退化性疾病，临床症状除了震颤、运动不能及僵直外，常伴随类似额叶损伤的认知功能障碍，这些认知障碍一般以为是额叶-皮质下神经回路受损所导致。P300-事件性诱发电位，可以反应出人类的认知历程，常被用来检测大脑高级皮质功能的异常。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐