| 1. | Leaf-feeding resistance to this insect is conditioned by increasing tissue concentrations of benzoxazolinones and their precursor hydroxamic acids .
对这种害虫取食叶片的抗性决定于组织中苯并唑啉酮及其前体氧、肟酸浓度的增加。 |
| 2. | Leaf - feeding resistance to this insect is conditioned by increasing tissue concentrations of benzoxazolinones and their precursor hydroxamic acids
对这种害虫取食叶片的抗性决定于组织中苯并?唑啉酮及其前体氧、肟酸浓度的增加。 |
| 3. | Leaf - feeding resistance to this insect is conditioned by increasing tissue concentrations of benzoxazolinones and their precursor hydroxamic acids
对这种害虫取食叶片的抗性决定于组织中苯并??唑啉酮及其前体氧、肟酸浓度的增加。 |
| 4. | Several effective factors ( sulphur concentration , reaction time , reaction temperature , and surplus sulphur ) are given and the treatment technology is provided
给出了酸浓度、反应时间、反应温度、剩余酸等各种因素对产品产量的影响。 |
| 5. | The higher the concentration of fa was , the shorter the period became and the higher the iron concentration of the effluent at the same filter layer was
而且随着过滤时间的推移,投加富里酸浓度越高,相同取样口的出水亚铁浓度也越来越高。 |
| 6. | Serum levels of 5 - ht and tryptophan were significantly lower in patients with depression who had a recent suicide attempt than in those patients who had never attempted suicide
血清5 -羟色胺与色氨酸浓度，最近有自杀意图病人比从未有自杀意图病人显著偏低。 |
| 7. | Total and free plasma concentrations of tryptophan decreased 73 % in both patients and controls during tryptophan depletion and increased approximately 60 % on the day of supplementation
患者和对照的总血浆色氨酸浓度与游离色氨酸浓度在色氨酸缺失期均下降73 ，在补充色氨酸的当天大约增加60 。 |
| 8. | Some result have been acquired , which best term of higher conductivity rate and the construction and optical - electrical of polyaniline are relative with kinds and thickness of acid again
得到了电导率较高的最佳再次掺杂条件以及聚苯胺的结构和光电性能与再掺杂酸的酸性和酸浓度都有较大关系的结论。 |
| 9. | This paper mainly aims at the strategic demands for large - aperture lightweight mirror proposed by high - tech development . its main research contents are : select material blank for lightweight mirror according to physical and chemical properties of optical glass ; analyze and calculate the deformation quantity of the mirror with finite element method ; design and optimize mirror body structure of 400 lightweight plane mirror and 450 lightweight spherical mirror , analyze glass cutting principle , design specisl - use grinding wheel structure , select reasonable technological parameters to implement the processing of weight reduction holes on 400 plane mirror ; analyze etching mechanism of hydrofluoric acid , look for the technological parameters such as the optimal acid concentration and etching time etc . ; eliminate the stress of weight reduction holes and micro - cracks on 400 lightweight plane mirror ; discuss the processing principle and
本论文的研究主要是瞄准国家高技术对大口径轻型镜的战略需求而开展的。主要研究内容是：根据光学玻璃的物理与化学性能，选择轻型镜坯材料；用有限元法对镜子的变形进行分析、计算，找出变形规律，优化设计400mm轻型平面镜、 450mm轻型球面镜镜体结构；分析玻璃切削原理，设计专用磨轮结构，选择合理工艺技术参数，完成400mm平面镜轻量化减重孔的加工；分析氢氟酸腐蚀光学玻璃机理，寻找最佳酸浓度、腐蚀作用时间等工艺参数，实现400mm平面镜减重孔应力与微裂纹的消除；讨论分离器加工原理和工艺技术特点，完成400mm平面轻型镜面形加工。 |
| 10. | This paper discusses the acid rinsing process in flax tow pre - treatment technology , and compares the influence degree among the three factors which are acid concentration , processing temperature and time in acid rinsing process by means of the unifactor experiment and orthogonal experiment , finally decides the optimized process
摘要对亚麻短纤前处理工艺中的预酸处理工序进行了研究，采用单因子实验及正交实验，比较酸浓度、处理温度、处理时间对预酸处理效果的影响程度，并得出最佳处理工艺。 |
