限制因素

But the biogenic sulfur isotopic fractionation process was complicated by many factors.

但生物成因的硫同位素分馏过程复杂，受诸多因素的限制。

But in practice fuzziness is inevitable in legislative language.

但是，由于种种因素的限制，使用模糊语言却是在制定法律时不可回避的事实。

The release of the new handgun will be subject to many political constraints.

出售这种新型手枪会收到许多政治因素的限制。

In this dissertation, we optimized the thinkness of each layer of TFEL devices using the layered optimization method to obtain ZnS: Ce〓 TFEL devices. Accoding to the energy level structure of Ce〓, two criteria for distinguishing the EL of Ce〓 were found out, from which it was conduded that the TFEL of ZnS: Ce〓 comes from 5d→4f transition of Ce〓. The measurement of brightness waveform showed that the TFEL of ZnS: Ce〓 was the luminescence from independent centers. and there were the field induced-delocalization in this process anf it〓s the cause of low TFEL efficiency of ZnS: Ce〓. In this dissertation, different influence factors on TFEL of ZnS: Ce〓 were sdudied. The influence of different host lattice is different: The blue/green ratio of ZnS: Ce〓 in hexagonal system of ZnS is larger than that in cubic system of ZnS, and the TFEL peaks in hexagonal system of ZnS moves toward longer wavelength compared with that in cubic system of ZnS. The adding buffer layer was used in this stage. The solubility of Ce〓 in ZnS was small and it was another limit to TFEL brightness of ZnS: Ce〓 device. The solubility of Ce〓 increased ten times when using Li ions as flux, so that the TFEL brightness of ZnS: Ce〓 was enhanced. It was found that the appearing of ZnO in active layer improves the TFEL of ZnS: Ce〓: the brightness and the wave range of ZnS: Ce〓TFEL were enhanced.

本文采用TFEL的分层优化方案，优化组合了各膜层厚度，选择最佳制备条件，得到了ZnS：Ce〓的TFEL；根据Ce〓的能级结构，找到了判别Ce〓的EL的两个简单依据，并据此断定ZnS：Ce〓的TFEL的两个发射峰分别属于Ce〓的〓和〓跃迁；亮度波形测量表明ZnS：Ce〓的TFEL属于分立中心发光，分析认为在此过程中存在着较严重的场致离化，这也是ZnS：Ce〓的TFEL效率较低的一个原因；本文考查了影响ZnS：Ce〓的TFEL的各种因素，发现：基质的晶体结构对ZnS：Ce〓的TFEL有所影响，在六角相ZnS中Ce〓的TFEL优于立方相ZnS中Ce〓的TFEL：发射峰的蓝-绿比相对较大，且光谱向短波方向移动，在此项研究中本文采用了在发光层前增镀过渡层的办法，过渡层为六角晶相的ZnO；限制ZnS：Ce〓的TFEL器件亮度的一个原因是Ce〓在ZnS中的溶解度低，本文用Li离子作助溶剂增大了Ce〓的溶解度，增大幅度为一个量级，并且ZnS：Ce〓的TFEL亮度明显提高；从ZnS：Ce〓的TFEL光谱来看ZnS：Ce〓的TFEL波长覆盖范围较小，亮度也不高，达不到做为白色TFEL材料的要求，需要寻找新的白色TFEL材料；在研究ZnS：Ce〓的TFEL中还发现：发光层中ZnO的出现有利于ZnS：Ce〓的TFEL：发射峰变宽、亮度增大。

Repeated minor trauma and overuse play an important role for the development of lesions in Hoffa's pad, extensor mechanism, lateral and medial restrain structures or cartilage surface, however usually an increase or change of activity is referred.

反复的微创伤和过度使用膝关节在膝关节的以下病损的发生中起到重要作用：Hoffa氏脂肪垫、膝关节伸膝装置、膝关节内侧和外侧限制结构或软骨表面，然而，活动的增加或改变常常为诱发因素。

According to the changjiang River cotton district orientation 50s~60s yarn manufacture base, the research situation and foregroud of high quality cotton was analyzed in Hunan, Moreover, the suggestion was proposed on base of restrict element, the reconstruct of spinning and weaving technological is most pressing matter of the moment, The creating and introducing new and excellent idioplasm and material, The heredity quality improving project, The outstanding fibre quality gene project are the fundamental me...

根据国家将长江中下游棉区定位为50￣60支纱生产基地的区划要求，分析国内外及湖南棉区高品质棉的研究现状及发展前景，并针对限制湖南高品质棉发展的"瓶颈"因素提出了加强纺织技术改造，是当务之急，创造与引进优异新种质新材料、遗传品质改良工程，优异纤维品质的基因工程是根本途径，加速新品种选育是重中之重。

The advantage of using microbial biopolymers is that production is independent of climate, political events that can limit raw material supplies, and the depletion of natural resources.

使用微生物生物聚合体的优点是原料的供应不受气候和政治因素的制约以及自然资源短缺的限制。

Back to your question, there are 2 factors: Induced constraints and Relationship.

让我搜寻。回到您的问题，有2 个因素：限制和关系。

Temperature changing is one of main factors that limit to improve its precision for inertial device now and future.

对于目前及未来的惯性器件，温度变化是限制其精度提高的主要因素之一。

This paper addresses some of the issues limiting the development and adoption of microbial inoculants by briefly reviewing the mode of action, inoculant production and performance of several of the more promising organisms that increase availability and uptake of plant nutrients in agriculture.

本文拟通过对能提高作物养分吸收及有效性的几种比较有前途的微生物的作用方式及接种剂生产和效果作一简要回顾，以说明限制微生物接种剂的发展和采用的一些因素。

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。