较小

The samples have lower permittivities by adding MgO before Ba0.6Sr0.4TiO3 powder be pre-synthesized, but have higher tunabilities and lower high frequency losses by adding MgO after Ba0.6Sr0.4TiO3 powder be pre-synthesized. The tunabilities of the samples prepared by adding 15%~25% MgO after Ba0.6Sr0.4TiO3 powder be pre-synthesized are all higher than 20% at 103 V/mm.

MgO添加量相同时，在预合成BSTO前加入，样品的介电常数较低；在预合成BSTO后加入，样品的高频损耗较小，可调性较高，当添加质量分数为15%~25%的MgO，样品在10^3V/mm电场强度下的可调性均高于20%。

Two series of polyurethane acrylate grafted acrylic resins (Acr-g-TPU-PETA and Acr-gPPU-PETA) self-emulsifying systems are obtained by grafting -NCO group modified polyurethane acrylates with acrylic copolymer prepared from n-butyl acrylate, styrene,βhydroxyethyl methacrylate and acrylic acid The self-emulsifying systems showed Newtonian fluidity with viscosity closed to that of water, the solid contents were around 30% The T〓 of 15～4℃ for dried film before photocuring favored film formation at room temperature DSC and DMA results showed that PU-PETA is compatible with acrylic resin in the grafted resin The TG and dTG curves for Acr-g-PU-PETA samples were substantially different from the corresponding blends, and the brodened dTG peaks for photocured grafted resin suggest that there might be multiple interactions among chain segments The photocued film of the grafted resins self-emulsifying system exhibited good overall properties with polyurethane acrylate grafts ranging from 30% to 50%, and Acr-g-TPU-PETA series showed better properties than Acr-gPPU-PETA series The adhesion of the photocured film was 1～2 grade, impact strength was 50kg-cm and flexibility was 1mm The Shore hardness and the adhesion of the film decreased markedly if PETA was replaced by HEMA as photoactive group due to the lower C=C double bond content in the grafted resin The polyhydroxy amine-linked thioxanthones photoinitiators can be evenly dispersed in self-emulsifying system without color spot appearing in the dried film The films photocured with IV〓～IV〓 generally exhibited higher Shore hardness, gloss and solventresistance than that cured with Irgacure 2959 and did not induce the rusting of the iron substrate Pigmenting with titanium oxide had no effect on the photocuring The polyhydroxy amine-linked thioxanthone IV〓 and IV〓 can be new candidates for the formulation of titanium oxide pigmented photocurable water-borne coatings for their pale-yellow appearance and slight interference with the color of the coatings WB 4759 with high water-solubility coalesced and separated from the dried resin film, and even induced the rusting of iron substrate.

以丙烯酸丁酯，甲基丙烯酸-β-羟乙酯，丙烯酸及苯乙烯合成厂丙烯酸共聚树脂，并与含-NCO端基的聚氨酯丙烯酸酯接枝反应，经水性化后，得到两个系列（Acr-g-TPU-PETA和Acr-g-PPU-PETA）各5个不同配比的丙烯酸树脂接枝聚氨酯丙烯酸酯自乳化体系，粘度与水相近，为牛顿流体，固含量30％左右。光固化前干燥涂膜的玻璃化转变温度在-15℃～4℃之间，有利于室温下成膜。DSC及DMA谱表明两种树脂基本相容。Acr-g-PU-PETA的热失重行为明显不同于共混材料，接枝样dTG峰明显宽化，表明接枝样中链段之间的相互作刚有多重性，丙烯酸树脂与聚氨酯之间有一定的相容性。接枝树脂自乳化体系光固化涂层的综合性能以聚氨酯丙烯酸酯成分为50％～30％者相对较好，且以Acr-g-TPU-PETA系列更理想。光固化膜的附着力为1～2级，冲击强度为50kg·cm，柔软性多为1mm。以HEMA代替PETA作为接枝树脂的活性基团，碳—碳双键密度太低，光固化膜交联点太少，硬度和附着力均较差。多羟基胺连硫杂蒽酮光引发剂能均匀分散于树脂自乳化体系和接枝树脂干膜中，不出现色斑，光固化膜肖氏硬度一般高于以Irgacure 2959为光引发剂的光固化膜，光泽度及耐丁酮溶剂性能均有所提高，不会诱导铁基生锈，钛白着色对光固化结果几乎没有影响。本论文所合成的多羟基胺连硫杂蒽酮光引发剂IV〓与IV〓为浅黄色，对光固化涂层的颜色干扰较小，为配制钛白着色光固化水性涂料提供了新的光引发剂。水溶性太强的WB 4759在干膜中易聚结析出，且对所附着的铁基有诱导锈蚀作用。

After pericardial effusion,the diastolic pressure of right ventricle and pulmonary vein pres-sure pulsated with intrathoracic pressure;the pressure of carotid vein and femoral vein were still stable.

颈内静脉及股静脉压较稳定，波动幅度较小，分别为0.06kPa和-0.06kPa；心包填塞后，胸内压呼吸性波动加大，左右心室舒张压、肺静脉压的波动幅度随之加大，但颈静脉压及股静脉压仍较稳定。

With large-scale model tests of open-cut box tunnel and shallow bored horseshoetunnel intersecting orthogonally and obliquely with active ground fissure zone individually, the adaptability of sectionalized tunnel passing through active ground fissure is studied,theresults show that the sectionalized tunnel with flexible joint can bear very large sheardeformation,and the deformation and secondary stress of adjacent sectionalized tunnel underthe action of ground fissure is small,meantime many sectionalized tunnels can eliminatepartly the effect of active ground fissure movement,have a good capability of adapting itselfto the large deformation.

8通过分段设缝的明挖箱形隧道和浅埋暗挖马蹄形隧道分别正交和斜交穿越地裂缝带穿的大型模型试验，对分段设变形缝的地铁隧道穿越地裂缝带的适应性进行了研究，结果表明分段式柔性接头隧道能承受较大的剪切变形，相邻衬砌管段变形和次生应力均较小，同时多段设变形缝具有很好的消化地裂缝变形的效果，从而说明多段设变形缝加柔性接头连接的地铁隧道具有较强的适应地裂缝活动大变形的能力。

Compared to parents, F〓 was tardier to the impacting of the environments, and the changing range of flowering interval was smaller. Flowering and fruiting behaviors were mainly controlled by dominant effects at early period, but by additive effects later on.

不同品种类型的开花表现不同，受环境条件的影响也不同，早熟类型材料受环境影响最大，中熟品种次之，晚熟品种相对较稳定。F1植株与其亲本相比，间隔期随果节位变化或季节推移变动较小，对环境变化较不敏感。

3D topographies also show that there are a small amount of summits on the surface. The high summits is about 2~3 times higher than the low summits.

三维形貌图显示，金刚石表面存在较少数量的由点到凸峰，且较大凸峰的高度在50~60 nm之间，是较小凸峰高度的2~3倍。

Most negative charges are distributed on N(4) and N(1) with N(4) being the most. Above 3000cm-1 C-substituted tetrazoles have more and stronger absorption lines than the corresponding N-substituted isomers.

环负电荷主要分布在N(4)和N(1)原子上且N(4)较N(1)为多。C-取代物的IR光谱在3000cm-1以上有较强吸收而N-取代物则较小，且前者的强吸收线多于后者。

During the acid washing process of steel tube,it can produce much acid wastewater which contains metal ions.

含有金属离子成分的酸性废水一般采用石灰乳中和法进行处理，但该方法处理后生成的沉淀密度较小，沉降效率较低，外排水水质变化较大。

Do poineering work board the company appears on the market conditional photograph is compared advocate board reduce greatly, average scale is lesser, manage insufficient stability, high-tech kind the risk is higher also while company poineering initial stage has larger growing latent capacity, because this does poineering work board the market needs to adopt a design more commercialize, than advocate board the system retreating city with more rigid market comes discard of aggrandizement superior bad, maintain the integral quality of the market, also guide investor to establish careful investment concept.

创业板公司上市条件相比主板大为降低，平均规模较小、经营不够稳定，高科技类公司创业初期具有较大成长潜力的同时风险也较高，因此创业板市场需通过设计更市场化、比主板市场更加严格的退市制度来强化优胜劣汰，保持市场的整体素质，也引导投资者树立审慎的投资理念。

The reflective coating was prepared with glass bubbles and Al 〓 coated glass bubbles used as pigments. The naked glass bubble went together during the coating drying because its'low density. When the Al 〓 coated glass bubbles used as pigments, the bubbles can be dispersed very well in the dry coating.

空心玻璃微球和氢氧化铝涂层玻璃微球作为填料时，涂料在400nm-2500nm范围内都具有较大反射率；纳米二氧化钛作填料时，在可见光区域具有较大反射，红外区域反射率较小；以纳米二氧化硅作为填料的涂料在整个紫外-可见-近红外区域反射率都很低。

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