Design on Area of Composite Oil Cylinder of XXJ300/500 Hydraulic Energy-storing Workover Rig;
XXJ300/500液压蓄能修井机组合油缸面积的设计
Study on measurements of scar areas and irregularity degree;
瘢痕面积及其不规则程度的定量测量方法研究
The inversed prediction of each member area in composite wall under the sound insulation requirement;
按隔声要求的组合墙体各构件面积反演
A few thoughts on the architectural acreage calculating regulation;
关于建筑面积计算规则的几点思考
Based on determining and explaining land use/cover,the paper analysis acreage change and development direction of Xinjiang oasis in the past five years.
在新疆土地利用/土地覆盖类型判读解译的基础上,对新疆绿洲近五年来的面积变化及发展趋势进行了分析。
Graph paper, parallel, and planimeter methods are current tools for acreage calculation.
目前常用的量算面积方法有方格纸法、平行线法、求积仪法。
The effect of confluence angle, discharge ratio (ratio of branch pipe discharge to total discharge in main pipe) and area ratio (ratio of branch pipe area to main pipe area) were analyzed.
分析了交汇角、流量比(支管流量/合流量)及面积比(支管面积/主管面积)等因素的影响规律,并对各影响因素进行了分析比较。
By using the semi experiential engineering arithmetic based on the ideology of area ratio, the slope of lift coefficient curve, the zero lift drag coefficient and the induced drag factor of double delta wing aircraft were calculated.
采用基于面积比思想的半经验工程算法计算了双三角翼飞机的升力系数曲线斜率、零升阻力系数和诱导阻力因子。
Relation between specific leaf areas and leaf nutritent contents of plants growing on slopelands with different farming-abandoned periods in the Loess Plateau;
黄土高原不同退耕年限坡地植物比叶面积与养分含量的关系
Photosynthesis in relation to leaf nitrogen,phosphorus and specific leaf area of seedlings and saplings in tropical montane rain forest of Hainan Island,South China;
海南岛热带山地雨林幼苗幼树光合与叶氮、叶磷及比叶面积的关系
Concentrations of PAHs in leaves of six dominant species in the Pearl River Delta of South China were determined with gas chromatography and mass spectrometry(GC-MS),and synchronously leaf-lipid contents,leaf areas,specific leaf areas(SLA) were measured.
应用气相色谱-质谱联用方法测定了珠江三角洲地区6种主要树种叶片多环芳烃(PAHs)的含量,并对相应的叶脂含量、叶面积、比叶面积进行了测定,探讨了叶片PAHs含量特征和种间差异的影响因素。