The reduced density of the bird skeleton provided a light but strong frame.
减轻了的骨架密度则提供了轻巧而坚固的身体框架。
The key to this is the reduced density of the atmosphere, which affects how fast the ball moves through the air and also the bend of a spinning ball.
此处的关键在于大气的折合密度，它会影响球在空中穿越的速度以及旋转球的弯曲度。
Using it we can conveniently and simply convert a ME into its corresponding differential equation and from solution of which we can extract the reduced density operator.
该方法能方便、简洁地将密度主方程转化为对应的普通微分方程，并能从微分方程的解中提取出约化密度算符。
A general connection between the reduced fidelity susceptibility and quantum phase transitions is given in terms of the relation between reduced density matrix and ground-state energy.
根据约化密度矩阵与基态能量之间的关系，我们给出了约化保真率和量子相变之间的一般关系。
This method is not from the first principle. A better approach is based on the reduced density matrix, which eliminate the infinite number of the freedoms of the dissipative environment.
该方法不是从第一原理出发，因为耗散环境应该被看成是自由度为无限维的谐振子或原子系统，对它的求解最好的方式是求解约化密度矩阵方程。
Underwater directional blasting can be achieved through the methods of reduced density of medium in thrown direction, formed directional pit, directional comulative blasting, delayed blasting etc.
水下定向爆破可以通过减少抛掷方向的介质密度、形成定向坑，利用定向聚能药包及延期爆破等方法实现。
Various physical changes are possible, including increased body fat; reduced muscle bulk, strength and endurance; and decreased bone density.
体格也可能发生各种变化，如身体变胖、肌肉减少、力量和耐力减弱骨骼密度降低。
You are shrunk to the height of a nickel and your mass is proportionally reduced so as to maintain your original density. You are then thrown into an empty glass blender.
假设你被缩小到一枚硬币那么大，你的质量也同比例缩小以保持你的密度不变。
Compared with the data of 1993, the biomass and inhabit density reduced obviously.
与1993年资料相比，生物量及栖息密度显著降低。
However, the pixel density of the film can be straightforwardly reduced by fabricating smaller array spacing and a smaller antenna size, as well as using a more tightly focusing lens for recording.
但是，薄膜的像素密度会由于通造更小的阵列间距和更小的晶须尺寸以及使用更精密的聚焦透镜等直接降低。
Results: White matter density in the left prefrontal cortex and genu of corpus callosum was significantly reduced in both patients and their siblings compared with that in controls.
结果：在左侧前额叶和胼胝体膝部，患者及同胞的白质密度值显著小于正常对照组，患者和同胞之间的差异未达到统计学意义水平。
The microstructure of longitudinal section in rebar was banded ferrite and pearlite and the ferrite band density reduced gradually along radius of rebar.
纵截面上，在铁素体基体上分布着沿轧向呈纤维状的珠光体，铁素体条带密度从边缘至芯部呈逐渐减少的趋势。
The energy consumption can be reduced if ratio of acid to zinc is controlled reasonably in zinc electrolysis process under the condition of different current density.
锌电解过程中，在不同电流密度条件下合理控制电解液的酸锌比能有效地降低能耗。
Reduced downtown population density put an end to the prolonged unreasonable overpopulation problem, playing a significant role in improving the city functions and the residents' dwelling conditions.
中心城区人口密度的下降，扭转了长期存在的市区人口过于稠密的不合理状况，对改善城市功能和居民居住条件发挥了显著作用。
As the density of larvae was reduced, the volume of water in the rearing chamber was decreased by lifting it up, keeping the water line above the bottom of the rearing chamber.
当幼虫的密度是不断减少，在繁育间内的水通过提起圆筒而减少，保持水线在繁育间底部上。
On equal density, green films got less radiation dose than blue films and the dose could be reduced to 57 %.
两片在等密度下比较，绿组的表皮剂量比蓝组可降低到57%。
The results of vascular corrosion castings indicated pedicled vessels remained patency, but the micro-vascular density of free flap in high-dose group reduced dramatically.
微血管铸型显示轴血管通畅，但高剂量组皮瓣微血管密度明显降低。
The porosity of tinplate can be reduced by increasing the electricity of passivation, improving the current density of passivation in particular.
通过适当提高钝化电量，尤其是提高钝化电流密度，也可以降低镀锡板孔隙率。
Moreover, Er-xian decoction obviously reduced osteoclast number(P<0.01)and enhanced bone density of femur metaphysis in ovariectomized rats(P<0.05).
减少破骨细胞数（P<0.01）且显著增加去卵巢大鼠股骨骨密度（P<0.05）。
Result:XST injection could reduced nerve cell apoptosis, and the intergral optical density of the apoptotic.
结果：血塞通能明显降低神经细胞凋亡百分率，降低凋亡神经细胞积分光密度，减轻病理损害。
This table also demonstrates that the necessary feed intake per pig is reduced when the energy density of the diet provided is increased.
这个表也证明了提供饲料的能量密度增加，使得每只猪的采食量减少。
By using this kind of shielding effects, the electric current density distribution can be improved, the back-corona can be reduced and the high voltage and low current state can be obtained.
利用电晕线支撑部分和屏蔽管的静电屏蔽效应，可以改善电除尘器板电流密度分布，减弱反电晕，并可得到高电压低电流的安全运行状态。
The density of thyroid reduced to some extent mostly in hypothyroidism.
密度都有不同程度降低，以甲低最为显著。
But if fresh water from melting glaciers and icebergs is added, the current's density is gradually reduced and it can't sink to the bottom.
但是如果从融化的冰川和冰山上流下来的淡水进入了洋流，海水浓度就会逐渐降低，不会再沉到海底。
From pulp chamber to root apex, the diameter, the density and the mean percentage area of tubular openings all reduced gradually.
从髓室自根尖方向，牙本质小管口的直径、密度和相对面积均逐渐减小。
In order to avoid the occurrence of dried soil layer, it is necessary to select the tree species with slow growth and low water consumption, and the afforesting density should be reduced.
为防止严重的土壤干层发生，选择生长较缓慢、消耗水分少的树种是必要的，并应减小造林树种植株密度。
The master equations of a reduced system density operator , by means of the Liouville equation and the projection operators techniques have been derived.
在本文中我们利用投影算符技巧通过刘维方程推导了系统约化密度主方程，这种方法特别适合于赝非马尔可夫的库场情况。
During development, the endothelial cells thinned , the average profile area of the vessels reduced and the volume density of vascular lumen increased gradually.
发生过程中内皮细胞由厚变薄，血管平均截面积逐渐减小，管腔的体密度增大；
During development, the endothelial cells thinned , the average profile area of the vessels reduced and the volume density of vascular lumen increased gradually.
发生过程中内皮细胞由厚变薄，血管平均截面积逐渐减小，管腔的体密度增大；
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