OBJECTIVE: Contingent negative variation (CNV) is an important cerebral evoked potential.
目的：关联性负变是一种重要的脑诱发电位。
BACKGROUND: Contingent negative variation (CNV) is a kind of cerebral evoked potential, which is closely related with mental medicine and psychology.
背景：关联性负变是与精神医学和心理学关系最为密切的一种脑诱发电位。
Objective The contingent negative variation (CNV) elicited by different stimulus paradigms consisted of tones and face photos of familiar persons and strangers were studied.
目的研究熟悉和陌生人面照片与短声组成不同的刺激序列诱发伴随负变化(CNV)。
The EW-trending strain variation along the western margin is the maximum and it is characterized by the alternatively positive and negative variations from the west to the east;
东西向应变西边缘变化最大。 此外，由西向东还具有正负交替的变化特征；
The minimum temperature showed the negative impact on the early rice caloric value with great variation.
最低温度对热值具负影响作用，表现出大的变异系数。
Besides negative thermal expansion, the researchers also found that changes in temperature lead to a significant variation in the porosity of the material, which is therefore highly controllable.
除了负的热膨胀效应，研究人员也发现了温度改变引起的材料多孔性的明显改变，因而这种多孔性就变得高度可控。
Zero-sequence current criterion, negative sequence current criterion and phase current variation can be used to improve the performance of breaker failure protection for ACF sub-bank.
针对单纯采用相电流判据的不足之处，本文提出增加零序电流、负序电流及电流变化量判据，以有效地避免保护误动或者拒动。
Analysis is conducted for the variation of cutting force during the cutting process and the effect of negative shearing on the cutter damage is pointed out.
分析了切削过程中切削力的变化情况，并指出负剪切现象对刀具破损的影响。
The variation rate of subsidence will become a negative value when the groundwater causes the rebound of foundation, in addition, the cumulative subsidence will decrease.
地下水回升引起地基回弹，沉降变化速率为负值，累计沉降量减少。
Gravity variation distribution in high negative value region is just consistent with the second shear strain's high value region of strain field obtained from GPS observation.
重力负值变化高值区的分布与GPS观测给出的应变场第二剪应变高值区一致。
The opposite situation occurred in the years with the negative temporal variation.
在海温异常随时间变化为负的年份，情况正好相反。
The negative relationship from variation of land productivity to variation of production is more prominent than reversing, which means natural system has a stronger buffer.
土地生产潜力利用率变动对产出变动的负相关关系相对更显著，说明自然系统具有更强的缓冲性。
The axial force of piles first increases with the depth and then decreases. The variation of negative skin friction with the depth of piles is nonlinear.
由于负摩阻力的作用，桩身轴力随着深度的增加先增大后减小，桩侧摩阻力沿深度呈非线性变化。
When the variation rate of field intensity is more than zero, plants absorb negative ions and form a downward plant nourishment transport electric current;
场强变化率大于零时，植物吸收阴离子，形成方向向下的植物养料输送电流（以下简称植物电流）；
The variation of evapotranspiration rate has negative relation with water table change, and if the water table lowers greatly Tamarix will die from moisture shortage.
蒸散速率与地下水位变化成反相关关系，地下水位的大幅度下降可能致使柽柳死亡。
Politeness; Positive Politeness Strategies; Negative Politeness Strategies; Gender Variation; Chinese Culture;
礼貌；正面礼貌策略；负面礼貌策略；性别差异；汉文化；
Politeness; Positive Politeness Strategies; Negative Politeness Strategies; Gender Variation; Chinese Culture;
礼貌；正面礼貌策略；负面礼貌策略；性别差异；汉文化；
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