这其实是一种正负数的简单数字游戏。
It's really a simple numbers game with negative and positive numbers.
试验结果显示的最大误差为正负9年。
The results appear to be accurate to within plus or minus 9 years.
卫生工作者跨境流动具有正负两方面的后果。
The movement of health workers abroad has both negative and positive consequences.
一种情况是正负离子平衡问题，或比率问题。
One thing is the balance or ratio between positive and negative ions.
纠正负面的媒体信息。
正负两种思想在我们脑袋里自然而然地运作着。
The mind naturally works with both positive and negative thoughts.
一般我们允许有正负10%的差额。
当然，正负责任各有其适用的条件。
Of course, either positive or negative liability has its own application condition.
选用直流供电时，注意正负极标识。
During choose the direct current power supply, pay attention to the negative and positive.
然后给电池的正负电极施加电压。
是热电偶的正负极是否一致。
Is the thermocouple positive and negative poles are consistent.
现在必须介绍曲率半径的正负号规则。
It is now necessary to introduce a sign convention for radii of curvature.
是热电偶的正负极是否一致。
议会通过选举产生，但他们并未真正负责。
就此案例而言，是1995年6月，正负1.7年。
我们在找一个对这项工作真正负责的人。
We are looking for someone with a real sense of commitment to the job.
此次电话民调的误差幅度约正负为4%。
The telephone poll's margin of error is plus or minus 4 percent.
第一个差值(如果存在的话)正负均可。
The first difference (if one exists) may be either positive or negative.
使你的身体在正负力量之间保持化学平衡。
Keep your body chemistry well-balanced between negative and positive forces.
这项政策有正负影响。
直流直流是指没有正负极性往复变化的电流。
Direct current (DC) Direct current is current with no reversals in polarity.
这种能量就像正负电荷一样脉动着流遍全身。
This energy is something like positive and negative electrical charges pulsating throughout.
在气候系统中，存在着很多的正负反馈机制。
In climate system, there are many positive and negative feedback mechanisms.
各种铅酸性电池正负极拉网板栅及冲孔板栅。
All kinds of lead acid batteries are aligned pull screen grid and punching board gate.
终极电容器通过自然分开的正负电荷存储电能。
Ultracapacitors store electricity by physically separating positive and negative charges.
一根磁针的磁极作用，无论正负都是一样的真实。
The action of the negative pole of a magnetic needle is just as real as the action of the positive pole.
如果你把电池的正负极颠倒了，收音机就不会响了。
如果你把电池的正负极颠倒了，收音机就不会响了。
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