With increase of heat input and laser power density, the cross section of the weld transformed from nail shape to near X shape.
随焊接热输入和激光功率密度的增大，焊缝截面由钉形向近X形转变。
The results showed that the distribution of dislocations and twins in the same cross section is even, but their density varied along the axis direction of the polysilicon ingot.
结果表明，在相同的结晶条件下各类晶体缺陷在多晶硅锭的同一横截面上呈均匀分布，但在沿结晶生长方向上不同部位存在较大差异；
The reaction rate of neutrons with matter depends on the density of neutrons, their velocity, the nuclear density and the particular interaction cross section.
中子和物质的反应速度与中子的密度、中子的速度、原子核密度以及特有的反应截面有关。
The results show that the conductor selected through the economical current density method is not reasonable, and the reasonable conductor cross section is selected by this paper method.
结果表明，按经济电流密度选择的导线截面并不合理，而本文计算选择的导线截面能耗最小。
A long-pulse laser, whose energy density can cause the liquid mass transferred, can get a greater ablation ratio and a hole with larger cross section.
能量密度达到造成液态质量迁移条件的长脉冲激光，可获得较大的烧蚀率和截面积较大的通孔。
The air density distribution of the cross section could be reconstructed by SSART.
应用SSART技术可以重建截面密度分布。
At the same time, the mass flow rate and the heat flux density of each cross section of smoke flow were calculated as well.
同时，计算了烟气羽流各截面的质量流量和热流密度。
The influences of relative density and the shape of strut cross-section on the modulus are also discussed at the same time.
同时，讨论了泡沫材料相对密度和胞体支柱横截面形状对材料整体模量性质的影响。
MAIN OUTCOME MEASURES: The cellular density and cross section area of RMS, the expression of polysialylated neuronal cell adhesion molecule (PSA-NCAM)RESULTS: Totally 25 SD rats were recruited.
主要观察指标：嗅茎后份平面的细胞密度，横截面积和唾液酸-神经细胞黏附分子的表达。
The density of mitochondrial, the density of the surface number and average cross section in the experiment group showed great distinction compared with the model group(P<0.01).
用药组的线粒体体密度、面数密度和平均截面积与模型组相比差异有非常显著意义（P< 0 0 1 ）。
Atom loss from the trap and total collision cross section can be inferred from the knowledge of the density of background gases.
在获知背景气体密度的条件下，可以计算出原子损耗和完全碰撞截面。
Atom loss from the trap and total collision cross section can be inferred from the knowledge of the density of background gases.
在获知背景气体密度的条件下，可以计算出原子损耗和完全碰撞截面。
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