查询词典 minimum density

A new density operator formalism for describing thecoupled high-spin systems was proposed.The formula ofevolution of density operators under the effect of weakspin-spin coupling were derived.Some experiments wereanalyzed include refocused INEPT and homonuclear COSY(for2D nuclear).

五提出一种描述高自旋体系密度算符演化的新方法，推导了高自旋体系和自旋算符在弱偶合哈密顿作用下的演化公式，并以■核(2D)为例，计算了重聚INEPT和同核COSY实验谱。

However, the water quality simulation results by CE-QUAL-W2 model revealed that the hydrologically induced density currents in winter together with the external loads of P were the main cause of the surface water quality deterioration, even though the bottom water carrying abundant P internal loads might be lifted to the middle layer by the water momentum force by the density current.

然而以CE-QUAL-W2二维水理水质模式模拟结果，翡翠水库年初表水总磷浓度突增主要是受到冬季冷水密度流造成的水体抬升及前一年停留在中层水之磷外部负荷联合贡献结果，相对地磷内部负荷虽可被抬升至中层水处，对表水的贡献有限。

However, the water quality simulation results by CE-QUAL-W2 model revealed that the hydrologically induced density currents in winter together with the external loads of P were the main cause of the surface water quality deterioration, even though the bottom water carrying abundant P internal loads might be lifted to the middle layer by the water momentum force by the density current.

模拟之底泥溶解总磷负荷和溶解总磷外部负荷相当。然而以CE-QUAL-W2二维水理水质模式模拟结果，翡翠水库年初表水总磷浓度突增主要是受到冬季冷水密度流造成的水体抬升及前一年停留在中层水之磷外部负荷联合贡献结果，相对地磷内部负荷虽可被抬升至中层水处，对表水的贡献有限。

The white low-density powder of the the sodium salt of polyaspartic acid was got by dropping the hydrolyzable solution to wiscked high speedly carbinol which Consumption amount is about 3-6 times to the amount of solution, the powders density is about 0.35g/ml.4 Polyaspartic acid was characterized by NMR and IR.5 The scale inhibition behavior of polyaspartic acid was studied and result shows: The calcium carbonate inhibition rate is up to 99% at the dosages of 12.5mg/ Land when pH value is 9.0, Ca2+ concentration is 120mg/L and HCO3- concentration is 366mg/L.6 The primary design was put forward for industrialized production of PASP.

在此工艺下得到聚天冬氨酸钠粉术，外观为白色的轻质粉术，堆积密度0.35g／ml，不用进行脱色和粉碎。 4。用红外光谱和核磁共振谱图对聚天冬氨酸进行了表征。 5。对合成的聚天冬氨酸钠对CaCO_3的阻垢性能进行了研究。结果表明：在Ca~(2+)离子浓度120mg/L(以碳酸钙计300mg/L)，HCO_3~-离子浓度为366mg/L(以碳酸钙计600mgL)，PH值=9.0的条件下，阻垢剂浓度达到12.5mg/L时阻垢率可达99％。

In order to investigate the effect of different parts and radial directions on the mechanical properties and dir-dried density of plantation wood,the mechanical properties and air-dried density of plantation-grown Castanopsis hystrix and Betula alnoides at different parts and radial directions were studied.

为了研究树木南北向与径向位置的变化对人工林木材力学性质与气干密度的影响，该文通过对红锥、西南桦人工林木材南北向、近髓心和近树皮2个不同径向位置的力学性质以及气干密度进行测定，分析了南北向和不同径向位置2个因素对两种木材力学性质和气干密度的影响，以及木材密度与抗弯强度、抗弯弹性模量、顺纹抗压强度的相关性。

Order of discontinuity ladder gradient separation: The nature school DNA separation purification conventional routes are use the gold to manage the CsCl idiomorphic to become the gradient balanced equilibrium density centrifuge process, the offcenter starts when the gold manage the CsCl density to be homogeneous, sample uniform distribution in which.

不连续阶梯梯度分离：质校DNA分离纯化传统方法是采用金管CsCl自形成梯度平衡等密度离心法，离心开始时金管CsCl密度均一，样品均匀分布其中。

The result shows that the relationship of conopy density with living cover plant space expresses a negative correlation, age class expresses a positive correlation, age class expresses a positive correlation; the relationship of conopy density with the dead covering plant and general covering plant expresses a positive linear covrelation, age class expreses an indicial ...

研究结果表明，郁闭度与活地被物负荷量呈负线性相关关系，龄级与其呈正线性相关关系；故郁闭度与死地被物和总地被物负荷量呈正线性相关关系，龄级与其呈正线性相关关系；蓄积量与地被物的负荷量呈线性正相关关系，但相关性较小。

Under the sametemperature, with the increase of the quantity of the additions, the density hasincreased, and the variation of the mechanical properties of these materialsdepended on the density and the quantities of the second-phase particle and intercrystalline phase of these materials.

随着烧结添加剂量的增加，在相同温度下材料的致密度上升，力学性能的变化与材料中的致密度、第二相粒子及晶间相有关。

X-ray examination demonstrated that at 4 weeks after implantation, some or even lateral intertransverse bridging regions were unclear, and material density in the repairing group was lower than control group; at 8 weeks after implantation, interspace between up and down bridging was shrunk, and a great quantity of calluses were successively formed; at 12 weeks after implantation, complete confluence was observed, and the density in the repairing group was closed to that in the control group.

结果：采用脱蛋白处理后的松质骨可见大小不等、相互交通、开放孔隙的网架结构，孔径200~500 μm，孔隙率60%左右，其无机成分为羟基磷灰石，有机成分为胶原，力学性能保存良好，细胞相容性良好。X射线片结果显示：植入第4周，横突桥接处部分区域模糊，以内侧明显，此时修复组材料密度略低于对照组；第8周上下桥接部间隙变小，大量连续骨痂生成；12周后完全融合，两组材料密度接近。

Enhanced CT imaging features were distinguished, and isopycnic density and low-density tumors were all displayed. Among 26 cases, the tumor diameter of 3 ~ 6cm was 22 cases , 1 ~ 3cm 4 cases; arterial phase scans had uneven reinforced, also had signs of peripancreatic fat layer disappeared, pancreatic duct and bile duct dilatation, bile duct obstruction, combined pancreatic cyst, tumor invasion blood vessels, peritoneal and lymph node metastasis.

增强CT影像特点显著，等密度及低密度肿瘤均得到显示。26例中，肿块直径3～6cm 22例、1～3cm 4例；动脉期扫描有不均匀强化，另有胰周脂肪层消失、胰管和胆管扩张、胆总管阻塞、合并胰腺囊肿、肿瘤侵及血管、腹膜的淋巴结转移等征象。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。