纤丝的

The research results of Retrovirus, Filovirus, Orthomyxovirus and Paramyxovirus showed that 6-helix bundle formed by heptad repeat regions of fusion proteins was the key to start membrane fusion.

对反转录病毒、纤丝病毒、正粘病毒和副粘病毒等的研究表明，其囊膜表面融合蛋白的七肽重复区HR1和HR2相互作用形成六螺旋束是引发膜融合的关键。

Both average microfibril angle and the density together accounted for the variation of longitudinal mechanical properties in wood microtome section.

正常间距拉伸中，微纤丝角对D333A组微切片的影响占主导作用，密度对D1123A和D1223A组微切片的影响占主导作用，两者一起互为补充的说明了微切片纵向力学性能的变化。

He dense inner region consists of high dense fibrils and flocculent vesicles. The primary spermatophore layer and secondary spermatophore layer show positive reaction to PAS.

EM显示：次级精荚壁由内外两层构成，内层致密，由电子密度高的纤丝和絮状泡组成，外层疏松，含有沟形网状结构和不规则的大絮状泡。

The sight of his sharply focused and unchanging eyes unnerved me, and I was quiet inside and full Of love for those nearest me-my human children, my dark-haired little Benji and my tender willowy Sybell--but I was not strong enough just yet to take them away.

他那双直直注视，毫无变化的眼睛让我不安，可我的心中很静，充满了对与我最亲近的人的爱--我的人类儿女，我黑发的小本吉和我温柔纤秀的丝贝尔--但是我此时还没有意志带他们离开。

The fiber length has only little influence on the basic density within the growth rings, and significant correlation at 0.01 levels was found between the basic density and the fiber length among the different rings. Only slight negative correlation was found between the basic density and the fiber width within the growth rings, but significant positive correlation at 0.01 levels was indicated between the basic density and the fiber width among the growth rings, contrary to that of fiber length. It was demonstrated that significant positive correlations at 0.01 levels between the basic density and fiber double wall thickness, fiber length to width ratio and double wall thickness to diameter ratio, significant negative correlations at 0.01 levels between the basic density and fiber diameter and diameter to width ratio, only slight negative correlation between the basic density and fiber width both in the same growth rings and among the different growth rings. No significant correlation was found between the basic density and the vessel morphological features, nor was the tissue proportion in the same growth rings. But among the different rings, it was found there was significant positive correlation at 0.01 levels between the basic density and the fiber proportion among the different rings, and significant negative correlation at 0.01 levels between the basic density and vessel-elements proportion and ray proportion, only slight negative correlation between the basic density and the parenchym proportion. Significant or no significant negative correlation was found between the basic density and the microfibril angle in the same growth rings, but significant negative correlation was found between the basic density and the microfibril angle among the different growth rings.

生长轮内纤维长度对基本密度的影响不大，而在不同生长轮间纤维长度与基本密度达极显著正相关，纤维宽度与此相反，同一生长轮内纤维宽度与基本密度极显著负相关，不同生长轮间只有微弱负相关；基本密度与纤维双壁厚、长宽比、壁腔比在生长轮内和生长轮间均呈极显著正相关，而与胞腔直径、腔径比均呈极显著负相关，仅与纤维宽度呈微弱的负相关；导管形态对基本密度的影响不显著；同一生长轮内组织比量对基本密度的影响也不显著，但不同生长轮间基本密度与纤维比量呈极显著正相关，与导管比量和木射线比量呈极显著负相关，与轴向薄壁细胞比量仅呈不显著负相关；生长轮内基本密度与微纤丝角呈显著或不显著负相关，但在生长轮间这种负相关达到极显著水平。

They vary greatly in composition between species. The hemicelluloses and pectic substances interact with the cellulose microfibrils of the cell wall to give extra strength and at the same time retain some plasticity.

半纤维素和果胶质与细胞壁中的纤维素微纤丝相结合，这样就具有了较大的强度同时还可以保持一定的可塑性。

During the wall thickening, the number of Golgi bodies increased apparently and cytoplasm was filled with Golgi vesicles. Polylamellate structure of the secondary wall appeard, Along with the further development of tracheary elements, the nucleous disappeared and organelles were decreased, while cortical microtubules were arranged neatly against the inner side of plasmalemma.

初生壁与质膜之间有间隔较规律的次生壁突起；中期，线粒体和高尔基体的数量明显增加，细胞质中几乎充满高尔基体及其囊泡，次生壁中微纤丝已成有序排列；晚期，细胞核消失，导管中央形成空腔，细胞器迅速减少，仅观察到少量高尔基体和线粒体，有大量周质微管沿细胞长轴分布，且在次生壁的周围有大量小泡附着，次生壁的分层结构清晰可见。

3In the normal space tensile,after controling the influence of density, the variation ofmicrofibril angle had a decisive effect on L MOE and longitudinal tensile strength of D333A wood microtome section; the Correlation coefficient between microfibril angle and L MOE became significant at 0.05 level for D1123A wood microtome section; the Correlation coefficients were all unsignificant between microfibril angle and L MOE and between microfibril angle and longitu- dinal tensile strength to D1223A wood microtome section.

正常间距拉伸中，控制密度的影响后，微纤丝角的变化对D333A组微切片纵向MOE和抗拉强度的变化起着决定性作用；对D1123A组微切片纵向MOE的相关系数达到0.05水平上显著；对D1223A组微切片纵向MOE和抗拉强度都成负相关关系，但都达不到显著水平。

The results indicated that the trait of fibre leng th has obviously het erosis,there may have positive effects among the genes controlling the trai t of fibre length,but may have negative effects among the genes controlling the t rait of wood density.

通过对美洲黑杨青杨（P.catha yana）的68个F2、双亲及其4个F1无性系田间随机区组设计，5次重复，分析了与木材材性有关的木材密度、纤维长、纤维宽以及微纤丝角等性状。

The mind is often covered in the scar tissue of old hurts and traumas, and layered in so many levels of consciousness not even the best of psychoanalysts has ever sorted through it.

精神常常被旧的伤痛纤丝覆盖，意识又可分为许多层次；即使最好的心理分析学者也没能将它们分清楚。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。