The ratio of primary care doctors to population is higher in Massachusetts than in other states.
在马萨诸塞州，初级保健医生与总人口比例高于其他各州。
Engine pressure ratio (EPR), the ratio of inlet pressure over exhaust-let pressure measurements. The ratio is used as the primary parameter to set thrust on some engines.
发动机压力比(epr)，进气压力与排气压力值的比，某些发动机以此作为设定推力的主要依据。
The test shows that size distribution of feeding coal, volatile content and its release as well as the total air rate and primary air ratio will influence the post combustion in CFB boiler.
测试结果表明，影响后燃现象的主要因素是给煤的粒度分布、煤挥发分含量及挥发分析出规律，同时与炉膛内总风量、一二次风量的配比有关。
The cordierite glass ceramic is successfully synthesized using the coal ash as the primary starting material in lieu of the traditional mineral material at the proper chemical ingredient ratio.
介绍以粉煤灰为主要原料代替传统的矿物原料，在化学计量比点成功地合成了堇青石微晶玻璃。
Results show that mass area ratio (mar) is a primary factor to average daily efficiency and instantaneous efficiency curve of tubular solar water heaters is not straight line.
结果表明，水量配比(MAR)是影响日平均效率的主要因素；真空管式太阳热水器的瞬时效率不是线性分布。
The primary drive gear(crankshaft gear)and the primary driven gear are the source of noise due to their high speed and bigger reduction ratio.
作为摩托车初级传动的曲轴齿轮及初级从动齿轮，由于转速高及降速比大，是产生噪声的主要因素。
Cross ratio and element at infinity are two important concepts with projective geometry and primary tools in considerate projective property of figures.
交比和无穷远元素是射影几何中的两个重要概念，它们是探讨图形射影性质的主要工具。
The ratio of height to diameter, ph value, reducing sugar, moisture, weight, lactobacillus, microzyme are primary physicochemical and microbial index during the process of steamed bread.
高径比、酸度、还原糖、水分、重量、乳酸菌和酵母菌是馒头加工过程中主要的理化和微生物变化指标。
Rated primary current, rated voltage ratio, accuracy combination, rated output, rated dynamic and thermal current see form.
额定一次电流、额定电压比、准确级组合、额定输出及额定动、热稳定电流见表。
The effect of inlet size, inlet Angle, dome height, primary nozzle expansion ratio and nozzle Numbers on combustion efficiency were taken into account.
考虑了进气道尺寸、进气夹角、头部距离、一次喷嘴扩张比和喷嘴数目等结构因素对补燃室掺混与燃烧性能的影响。
The primary requirements of Strehl ratio and light efficiency for optical modules in the weapon system are listed.
并列表给出武器系统中各个光学组件的斯特列尔比和光效率的初步要求。
The results show, when heating, the primary energy ratio of GEHP is 1.76 and exergy efficiency is 29.12%.
结果表明：燃气机热泵在供热时的一次能源利用率为1.76，(火用)效率为29.12%。
It is shown that both the ignition and the combustion efficiency can be significantly improved and the ratio of primary air can be greatly increased.
试验结果表明，钝体可显著改善劣质煤着火情况和大幅度提高燃烧效率，并可允许大幅度提高一次风率。
Results of the first law thermodynamics analysis, exergy analysis and energy grade theory show that the primary energy ratio of GEHP is 1.
对燃气机热泵的热力学第一定律、分析和能级平衡理论分析结果表明：其一次能源利用率可达1。
It has been shown that a primary input voltage can be transformed to any desired open-circuit secondary voltage by a suitable choice of turns ratio.
通过选择合适的匝数比，一次侧输入电压可任意转换成所希望的二次侧开路电压。
Result: the primary factor which influenced the extraction rate was grinding degree, then it was time of distillation, solid-liquid ratio and soaking time.
结果：影响挥发油得率的主要因素为粉碎度，其次为蒸馏时间和料液比，最后为浸泡时间。
The effects of swirl number of primary swirler and radial swirler, area ratio and sleeve divergence angle on the cold flow field of double swirl air intake were investigated.
试验研究了主、径向涡流器旋流数、面积比、套筒扩张角等参数对双旋流进气装置冷态流场的影响。
The results illustrate that primary air ratio has a major effect on pulverized coal ignition and minor effects on gas temperature, oxygen concentration and unburned carbon at furnace exit.
结果表明：一次风率对煤粉气流的着火影响较大，而对出口处烟气温度、氧量以及飞灰含碳量影响较小。
The primary objective is to study the effect of high-modulus PVA fibers on improving the seismic performance of super-high-strength concrete short columns with high axial pressure ratio.
试验旨在研究在较高轴压比条件下，高弹模PVA纤维对超高强混凝土短柱抗震延性的改善作用。
Especially village primary school education, occupy ratio bigger amount in the our country the primary school education.
特别是农村小学教育，在我国小学教育中占有比较大的数量。
The curve of relationship between flame speeds and the primary air ratio is got, and when primary air ratio is about 0.
得出了二甲醚火焰传播速度与一次空气系数的关系曲线，并且在一次空气系数约为0。
The primary factors affecting the structure and properties of the resulted fibers during pre-oxidation included pre-oxidation temperature and time and draw ratio.
指出预氧化过程中影响纤维结构与性能变化的主要因素有预氧化温度、预氧化时间和对纤维的拉伸倍数等。
The key point of "desert production" development theory is to raise light energy utilization ratio and to improve primary production of vegetation.
“沙产业”理论的核心是提高光能利用率，强化植物性的初级生产力。
The effects of the louver structure parameters, the feed concentration and the primary air velocity on the concentrated ratio (RC) were studied by the gas solid two-phase flow experiments.
通过气固两相流实验研究了浓缩比与百叶窗结构，给粉浓度及一次风速的定量关系。
The primary requirements of Strehl ratio and light efficiency for optical modules in the weapon system are...
并列表给出武器系统中各个光学组件的斯特列尔比和光效率的初步要求。
A new method is used to calculate and to make multi-elementary anomaly maps and ratio anomaly maps for evaluation of primary anomalies.
采用新的方法计算并制作了多元素综合异常图和比值异常图用于评价原生异常。
From the view of primary energy consume and primary energy consume ratio, the factors which affect energy saving of CCHP system is studied deeply.
从一次能耗和一次能耗率的角度较深入地研究了三联产系统的节能性。
In addition, the primary factors affecting coke ratio and PCI ratio were also analyzed and a prediction model was established respectively.
另外，分析了影响焦比和喷煤比的主要因素并建立了相应的预测模型。
In addition, the primary factors affecting coke ratio and PCI ratio were also analyzed and a prediction model was established respectively.
另外，分析了影响焦比和喷煤比的主要因素并建立了相应的预测模型。
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