查询词典 low-grade

Finally, the grafting polymerization of textile materials initiated by microwave low temperature plasma was conducted. Knitted cotton fabric was grafted by AMPS first, then knitted cotton and terylene/cotton fabrics were grafted with AMPS/NIPA dualistic monomers respectively. By means of grafting polymerization, the P dualisticintelligent hydrogel was added to textile.The influences of the factors on add-on, such as treatment time and power of plasma, concentrations of crosslinking agent and total monomers, proportion of AMPS, polymerizing temperature and time etc, was studied fully. The optimal conditions of grafting polymerization initiated by microwave low temperature plasma were determined by orthogonal design, variance analysis and mathematical statistics method so as to analyze the main influencing factors. Then swelling/deswelling kinetics, temperature-sensitivity and pH-sensitivity of grafted textile were studied. The performance indexes of hydrostatic pressure, moisture permeability and bursting strength of the knitted cotton and terylene/cotton fabrics before and after grafting were compared and evaluated synthetically.

此后用微波低温等离子体引发纺织材料的接枝聚合反应，分别研究了棉针织物接枝AMPS和棉、涤棉混纺针织物接枝AMPS/NIPA二元单体，使智能凝胶以接枝的方式添加到纺织材料上；详细探讨了微波低温等离子体处理功率和时间、总单体浓度、AMPS单体浓度、交联剂浓度及聚合反应温度和时间等因素对增重率的影响，通过正交设计、方差分析及数理统计对各影响因子进行分析，确定了微波低温等离子体引发接枝聚合的最佳工艺条件；对接枝纺织材料的失水-吸水动力学、温度敏感性、pH敏感性等进行了研究；对接枝前后棉、涤棉混纺针织物的静水压、透湿性和顶破强力等服用性能指标进行了对比和综合评价。

The conclusions were as follows: theνO-H andνC=O IR absorption maxima shifted towards higher wave numbers after imprinting 17β-estradiol on TFMAA-co-TRIM copolymer with the red shift of theνO-H groups being apparent after precipitation polymerization for 16h while that forνC=O groups being observed after polymerization for 24h. A strong interaction between TFMAA and 17β-estradiol was confirmed by the high selectivity for 17β-estradiol, as indicted by the values of the separation factor of isomers of 17β-estradiol/17α-estradiol (2.28) and the imprinted factor (3.01). Particle diameter of TFMAA-co-TRIM polymer was between 300 nm and 1.5μm, which suited well for solid phase sorbent throughout at low column pressure. The recognition of imprinting TFMAA-co-TRIM polymer for sterol molecules was driven by enthalpy eluted with acetronitile, and low temperature was in favor of the separation of sterol structure analogues on imprinting column. TFMAA-co-TRIM polymer possessed of determinate anti-heat stability, with melting point beginning at 255.84℃, Tp=257.40℃, control TFMAA-co-TRIM polymer and imprinting TFMAA-co-TRIM polymer were respectively decompounded at 267.79℃and 343.11℃, and solid micro-extraction noddle prepared by the special polymerization also showed definite recognition for 17β-estradiol by GC/MS detecting at 270℃. By selection of various washing and elution solvents, elution reagents of close polymerization system were of more advantage in template molecules retention and recognition on molecularly imprinted solid phase extraction column. At a certain extent, progesterone, 17α-estradiol, 17β-estradiol and 4-androstene-3, 17-dione could be intercepted on the MISPE column. Especially, MISPE had high selectivity for progesterone, and imprinting TFMAA-co-TRIM polymer could achieve adsorption balance within 50 min by absorption kinetics test for 17β-estradiol. However, MISPE column showed better selectivity and enrichment property for 17β-estradiol than C18 and CSPE columns according to the data from HPLC and GC/MS analyses. Recovery of 17β-estradiol on MISPE column was up to 85.5% while when prime extracting solution of milk powder was sampled, the recovery of CSPE and C18 columns were 43.7% and 30.7%, respectively.

通过研究阐明：紫外聚合产物TFMAA-co-TRIM中的νO-H振动吸收峰在聚合16h后红移，νC=O振动吸收峰在聚合24h后红移；TFMAA-co-TRIM对雌二醇异构体的印迹因子达到了3.01，α为2.28，优于其它功能单体参与得到的聚合物识别特性；TFMAA-co-TRIM聚合物粒径介于300 nm至1.5μm之间，作为色谱固定相具有良好的通量和低的柱压；在乙腈流动相中，TFMAA-co-TRIM分子印迹固定相的分离过程主要被焓驱动，低温有利于分子印迹固定相分离甾醇结构类似物；TFMAA-co-TRIM分子印迹聚合物在255.84℃时开始熔融，Tp=257.40℃，聚合物CP的降解温度在267.79℃，MIP降解温度在343.11℃，制备的固相微萃取头初步经GC/MS 270℃的耐热性测定；不同的洗提溶剂筛选证明了选择接近聚合溶剂的洗脱体系更有利于MISPE发挥识别效应；分子印迹固相萃取柱对孕酮、17α-雌二醇、17β-雌二醇和雄烯二酮都具有不同程度的保留特性，可作为此类化合物的吸附材料，特别对孕酮强保留的富集特性，可作为孕酮的选择性识别吸附剂，其分子印迹聚合物对17β-雌二醇的吸附动力学测定显示在50 min内基本达到吸附平衡，具有作为传感器核心敏感材料的潜力；对比萃取奶粉中17β-雌二醇性能，MISPE柱比非分子印迹固相萃取柱和C18柱具有更高的保留，回收率依次为85.5%，43.7%和30.7%。

"During the longer, nonactive period, the speed of the flywheel is built up s low ly by a comparatively low -powered motor."

在较长的非工作期间，由小功率发动机缓慢地增加飞轮的速度。

A true CEI requires at least the following elements:(1) minimal regulation of private schools,(2) unbiased, low formal entry barriers,(3) opportunity to specialize,(4) low informal entry barriers,(5) nondiscrimination in funding,(6) minimal uncertainty about the scope of the market,(7) no price controls, and (8) a minimal number of informed and mobile customers.

不幸的是，这些改革没有囊括竞争性教育产业的全部关键性要素，因而，其范围太有限，对其管制太严格，不能成为真正的市场模型。

Power fill develop from a company now more than 30 group company, act on the development with the low-key thought of deal with concrete matters relating to work all the time, but low-key be not nonfeasance.

威盛从1家公司发展到现在30余家的集团企业，一直本着务实的思想低调的发展，但是低调并非不作为。

It put up no immobile shape ,have relative flowability , can intrude into the deep formation,selectively plug big pore pathor and high permeability formation,make the fluid turn to low permeability formation ,improve the low conformance factor caused by the nonhomogeneity ,improve the recovery ratio in big range .

它表现出没有一定形状，具有一定流动性，能进入地层深部，选择性地堵塞大孔道或高渗透层，使液流转向进入较低渗透层，改善因非均质性造成的波及系数低的问题，从而大幅度的提高油藏的采收率。

Apply for low normal force and low wipe distance.

用於低的正常的力和低的擦距离。

The original PRT store transfer information in the vertices which leads low resolution models to have less detail than high resolution ones. In this study, the author proposes a method which combines PRT and normal mapping to bring high detail to low resolution models.

PRT相关论文皆以顶点为单位进行计算，这样的条件造成面数少的模型使用PRT的效果受到相当大的限制，因此本论文将PRT结合法向量贴图技术，可使得低面数模型也能具有非常高的细节表现。

However, it is noteworthy that a low price is not oversold who will value low.

不过，值得注意的是，低价格并不超卖谁将价值低。

This paper performs an numerical modelling on constant water flooding of water injection well arrays and production well arrays in low permeable reservoirs and analyses the factors effecting the recovery of water flooding in low permeable reservoirs, including pore structure of porous medium, oil water relative permeability curve, starting...

通过对低渗透油藏中注水井排和采油井排的定压水驱进行数值模拟，分析了低渗透油藏水驱采收率的影响因素，包括多孔介质孔隙结构、油水相对渗透率曲线、启动压力梯度、注入速度和注采井距。

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。