The utility model comprises an air drum, a setting scale for air inflow, a positive negative pressure gauge, a respiration valve and a face mask;
本实用新型有一个气鼓，一个进气量设定标尺，一个正负压力表，一个呼吸活瓣，一个面罩；
Method: Using positive negative blood grouping to detect ABO blood group, and investigating family heredity, birth order, birth month, compared with normal subjects.
方法：用临床常规的正反定型法检测abo血型，然后调查家族遗传史，胎次和出生月份，并与正常人进行比较。
The iteration of geometric programming with constraint positive negative term equations is applied to the optimal design for bolted tight connections used in pressure vessels.
对压力容器的螺柱组紧联接的优化设计，采用了约束正负定式几何规划迭代法。
There is some subjectivity in deciding whether a word is positive, negative, or neutral, but if you try it yourself, I think you'll find that most of the time it's fairly easy to classify words.
在确定一个词是积极、消极还是中性时具有少许主观性，但如果你自己试试，我想你也会发现，大多数时候，给词汇分类还是比较容易的。
These labels can be positive, negative or neutral.
这些标签可能是“积极”“消极”“中性”。
What if we can't decide whether their intentions are positive, negative or neutral?
如果无法确定其意图是积极的、消极的，还是中性的，又该怎么办？
Another group of 204 healthy volunteers classified each color as positive, negative or neutral.
另一组是204名健康志愿者，要求他们把每一种颜色分为积极的，消极的或中性的。
I can find out the sentence structures of the positive, negative statements and questions forms of the simple past tense.
我能归纳出一般过去时态的肯定句、否定句以及疑问句的基本句式结构。
If we view emotion from the aspect of feeling and the degree of the emotional experience, emotive factors can also be classified into three types: positive, negative and neutral.
如果仅从情绪色彩和情感体验程度而言，情感因素可分为：积极﹑消极和中间三种状态。
Your thoughts and beliefs may be positive, negative or neutral.
你的想法和信念也许是积极的、消极的或者是中立的。
It can be (decimal), positive, negative or zero.
它可以是(小数)、正数、负数或零。
The next significant question was how to predict the number of positive, negative and complex roots.
次一个重要的问题是怎样预知正根，负根和复根的个数。
ObjectiveTo study the relationship among positive, negative trait coping style and possible factors in college students of rehabilitation specialty.
目的探讨康复专业大学生积极和消极应对方式与各种可能因素之间的关系。
These three local minima differ by virtue of whether the resulting vacuum energy is positive, negative or zero.
我们可以使用真空能量是正、负或零，来区分这三个局部最小值。
Two KN spectral problems (positive, negative) and a discrete spectral problem are investigated in this thesis.
本文对两个连续谱问题(正、负k N谱问题)及一个离散谱问题进行了研究。
Based on the symmetry component theory, a method of the motor protection is presented by measuring positive, negative and zero sequence current component.
基于对称分量法理论，提出了基于检测正序、负序、零序电流分量的电动机保护方法。
This paper describes a new method by which the positive, negative resistance to ground of DC bus and branch could be tested precisely by mere use of universal instruments and standard resistors.
提出一种仅用万用表和标准电阻就可以准确测量出直流母线和支路负荷正对地电阻、负对地电阻的新测量方法，这种方法能准确查找绝缘低故障支路；
However, previous studies looking for any link between allergies, measles infection, and measles vaccination have produced positive, negative and neutral results.
然而，此前旨在寻找过敏反应、麻疹病毒感染和麻疹疫苗之间联系的研究曾得出过积极的、否定的和无关系的结果。
Analog data values are converted into a digital output or value change marker that indicates positive, negative, or no change.
模拟数据可以转化为数字输出，或者可以标示正、负、无变化的值变化标签。
In this test participants are briefly shown photographs that may be positive, negative or neutral in tone.
在这个实验中，实验参与者们短暂地看一些照片，这些照片的“格调”可能是积极的、消极的或者中性的。
Are such changes positive, negative or simply inevitable?
这些变迁是正面的、负面的，或仅仅是无法避免的？
But, if a field is fairly simple, you should be able to get some general feeling for whether your answer should be positive, negative or zero just by thinking about which way is my flow going.
但如果流速场很简单的话，大家理应有一种直觉，可以感受出来，结果应该为正为负，还是为零。
An electric current can consist of charges that are positive, negative, or both.
电流中可能包含正电荷、负电荷，或两种电荷同时存在。
We ask, is this positive, negative, or zero.
这是正的负的还是零。
Strong radar echoes and positive-negative velocity and head wind area are indicative to the heavy rainfall event.
强雷达回波和正负速度对、逆风区等特征对强降水具有指示意义。
For NC machining of plane section method, the machining path of tool cutting plane and implicit surface can be found, and the curve of the tool path is drawn by the positive-negative method.
把隐函数的优势应用到数控加工编程中，即对于截面法的数控加工，求出刀具切削平面与隐函数曲面的加工轨迹，再用正负法绘制刀具轨迹曲线。
Based on the equivalent covering, the necessary and sufficient condition for different covering to generate the same positive-negative region covering generalized rough sets is given.
通过引进覆盖等价的概念，给出了给定论域上任意集在不同覆盖下具有相同正负域覆盖广义粗集的充要条件。
You can explicitly specify the character pattern for how you want positive, negative, fractional, and exponential Numbers to appear.
您可以显式地指定字符模式，用以确定如何显示正数、负数、小数和指数。
You can explicitly specify the character pattern for how you want positive, negative, fractional, and exponential Numbers to appear.
您可以显式地指定字符模式，用以确定如何显示正数、负数、小数和指数。
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