变幅

用于AUV收放装置的变幅机构研究

Luffing mechanism applied to AUV launch and recovery method

齿条变幅机构制动过程的动载荷分析

Analysis of Dynamic Load in Braking process for Rack Luffing Mechanism

基于MATLAB的四杆变幅机构结构参数分析

Structural Parameter Analysis of Variable Range Four-bar Linkage with MATLAB

以ANSYS进行扭振超声变幅杆振动特性分析

Dynamic characteristic analysis of the torsional vibrating horn based on ANSYS

并通过ANSYS模态分析验证所选换能器以及变幅杆的可行性。

Through ANSYS model analysis to verify the feasibility of horn . 2 .

广州地磁Z分量日变幅的谱特征

Spectral characteristics of daily ranges of Z component at Guangzhou geomagnetic station

pH变幅大，自3.0至6.9。酸性潮滩土主要开发模式是种水稻，其次是海水养殖。

The pH ranges from 3.0 to 6.9.The developmental models are mainly to plant rice and to develop aquiculture .

磁静日Z变幅的月相效应

Lunar phase - effect on amplitude variation of Z component on magnetically quiet days

自动校核变幅水平性及调整待求参数的手段：r目标曲线。

The r-target curve , a means to check up the levelness of luffing and adjust the parameters evaluated automatically .

菜籽饼产生的量较多，发酵过程含量变幅为48.6～49.2μg／kg；

The range of the rapeseed cake ferulic acid content was from 48.6 to 49.2 μ g / kg .

用树木年生长周期中πP值的最低值和年变幅表示被测树种耐旱性强弱，得到了较为满意的结果。

By means of using the minimum value of π _P and the annual variation value of π _P express the drought-endurance , the results are satisfactory .

基于VB的折臂式船用甲板起重机变幅计算系统

Computing system of the luffing mechanism of folding type marine deck crane based on VB

主要特点是：（1）急始期间H分量急始跃变幅随磁纬降低而减小，且急始变幅的下降率随磁纬降低而逐渐增大；

The main characteristics are as follows . ( 1 ) SC range of H component decreases and the decrease rate increases with decreasing latitude .

c曲面方程和变幅加载下疲劳可靠性二维统计Miner准则。

And the two-dimensional statistical Miner 's rule is proposed for reliability based prediction of fatigue life under variable amplitude loading .

不同QTL的贡献率差异较大，变幅在3.19%~

The contribution values varied widely , ranging from 3.19 % to 47.48 % .

该反应机理能很好地解释为什么H2发射图象具有反应迅速、变幅大、恢复快的特征。

This reaction mechanism may well explain why the image of hydrogen emission possesses the characteristics of rapid response , change with great amplitude and quick return .

－P＞CK。随小麦生育期进展，根际微生物量逐渐提高，并在生育后期达到高峰。土壤不同，根际微生物数量的变幅也不一样。

With the growth of crops , the rhizosphere microorganisms increased gradually and came to peak . The number of rhizosphere microorganisms varied among soils .

为提高螺山站高流量时的预报精度，提出了以水位流量的变幅作为BP网络模型输入和输出的方法。

In order to improve forecasting precision , this paper brings forward a new method which uses time difference of water level and discharge as input and output .

结果指出，广州地磁Z分量日变幅的年平均与太阳活动指数F（10.7）的年平均存在良好的线性相关；

The results show that , the annual averages of daily variations of Z are favorably linearly correlative with the annual averages of the F_ ( 10.7 );

对照的PG活性及变幅明显低于摇青处理。

The PG activity and the range of variation were significantly lower in the control than that in the Yaoqing treatment .

其方法是采用以塑性应变幅同弹性应变幅之比值Δεp/Δεe作为应力应变参量，以常用的材料常数作为材料参数。

The method is to adopt the ratio of plastic strain range to elastic strain range as the stress-strain parameter , using the staple material constants as the material parameters in damage calculating expression .

F2代变幅较大的农艺性状为：有效穗数、单株穗重、秆重和每穗总粒数。

Variety of agricultural characters : number of effect panicle , panicle weight , stalk weight and grain number per panicle .

地下水位受季节影响较大，季节性差异明显，地下水位年变幅1～2m。

Ground water level is greatly affected by different seasons with obvious seasonal diversity and has1 ~ 2m annual variation amplitude .

随后运用有限元分析软件ANSYS对变幅杆进行精确建模与分析，比较了变幅杆在不同的建模精确度条件下各项参数的异同。

Subsequently the use of finite element analysis software ANSYS on the horn for accurate modeling and analysis , compared horn in different modeling accuracy of the parameters under the conditions of the similarities and differences .

介绍两种KROLL动臂塔式起重机折臂式随车起重机的变幅机构

Recommendable Two Types of KROLL Luffing Jib Cranes Luffing mechanism s of goose neck jib lorry loading cranes

结果表明，A2和B2两种气候变化情景下，未来3个时段冬小麦平均产量和最高产量会有所增高，但产量的年际波动和变率也将明显加大，产量的年际变幅也会显著增加。

The results shows : maximum yield , average yield as well as the yield variability will increase under both A2 and B2 climate change scenarios at all periods .

采用功率超声的新方法，研究了超声波功率、频率、声强、变幅杆直径、溶液初始pH值以及空化气体种类等因素对降解甲胺磷农药废水的影响。

A new method of ultrasonic irradiation was used to study the effects of such factors as ultrasonic power , ultrasonic frequency , ultrasonic intensity , probe diameter , initial pH value of solution and cavitating gases type on degradation of methamidophos pesticide wastewater .

同时发现任何处理的剖面土壤温度最大日变幅均有随土壤深度增加呈指数递减的趋势。（3）建立了BP人工神经网络土壤剖面温度预报模型，预测精度较高。

Furthermore , we found maximal soil temperature at the soil profile changes exponential descending with the depth increasing . ( 3 ) Based on the BP ANN , the forecasting model of soil temperature was founded and takes better forecasting result . 2 .

对充分退火的、晶粒尺寸超过10mm的99.999%纯Al试样在Schenck试验机上进行了恒应变幅的对称拉-压疲劳试验。

Symmetric push-pull fatigue was performed on well annealed 99.999 % purity Al specimens with grain sizes up to 10 mm under constant strain amplitude in a Schenck machine .

在三个环境中，共检测到7个控制脂肪含量的QTLs，分别位于第2、3、4、5和7染色体上，贡献率变幅为5.48-23.17%。

Altogether 7 QTLs were identified in three environments and mapped on 2 , 3 , 4 , 5 and 7 rice chromosomes , which accounted for 5.48-23.17 % of phenotypic variance .