For lower the soil sample cost , a directed soil sample method was designed . this method could set sample points only at key locations in the field , according to the analysis result of the referenced field information . 6 在对田间土壤采样方法研究与分析的基础上，设计了一种参考已有的农田土壤信息，来分析土壤参数的分布变化规律，并在农田中的关键位置设置采样点的指导采样方法。
Mekler idlis ( m - i ) pair theory suggests that each codon - directed amino acid residue in a sense peptide may make a specific pair - wise interaction with the corresponding complementary codon - directed residue in the complementary peptide . ahbs theory suggests also the parts between / in the proteins that are capable of interacting specifically . the interaction between receptor and ligand is the recognition and interaction between proteins . if the receptor is the sens e peptide , the ligand , which can specifically bind to it , must have one or several antisense peptides . these antisense peptides muat be located at the key place which has relationship with the function of the ligand Ahbs (反义同源盒)理论和分子识别理论描述了蛋白分子内和蛋白分子间可以特异结合的区域结构具有正义与反义的关系。受体与配体的相互作用实质上是蛋白质分子间的识别、结合和相互作用的过程。将受体看作是有义肽，那么可与之特异结合的配体分子中可能存在一段或多段反义肽，而且其存在的部位是配体功能的关键位置。
Abstract : after the concept of the acoustic transfer has been explained , a method on the basis of the test results to solve the acoustic transfer is presented , that is to slove the system of linear equations about the acoustic transfers based on measurement of frequency response between exciting force and velocity , exciting force and the point pressure in cavities 文摘:阐述了低频腔体声场的声传递函数的概念，提出了一种实验求解声传递函数的方法，即在腔体壁面各测点的力与速度、腔内关键位置力与声压之间频响函数测量的基础上，求解声传递函数的线性方程组。
Based on the kinematical design criterion of equi - chord percent ratio and spatial rigid body guiding mechanism , three theoretical design methods of arc track , non - arc track , and helical track are proposed in this thesis , meanwhile , different design methods about prime flap and sub - flap driving mechanisms are completed . three cases of different three - gaps - fowler - flap tracks are designed 对后缘三缝富勒襟翼工作时的3个关键位置，按照“等弦长百分比”运动的设计准则和空间刚体引导机构的设计思路，提出了圆弧轨道、非圆弧轨道和螺旋线轨道等3种空间位置引导轨道的设计原理，并分别给出主襟翼和子襟翼驱动机构的不同设计方法。
Find the law of the influence from the injection pressure to the filling time and the cavity pressure and make certain of the best filling time , injection time and injection pressure . though the analysis of the flowing velocity and pressure spread of the key position element in the injection parts in different gate position , we forecast the injection parts quality and the possibility injection flaw and its position , optimize the gate position . in this paper , though the research of analogue of the runner system of metal - powder injection molding and the process of injection molding , we get the law of how the injection parameter influence the injection process 在相同的注射条件下，通过分析喂料在不同直径和长度流道中的流动规律，得到了喂料在流道中的速度场、压力场和温度场，找到了流道长径比的合理取值范围，并得出通过改变流道设计可实现对现有设备资源充分利用的结论；给出了不同注射压力下，型腔压力与充模时间关系曲线和喂料熔体平均充填速度与充模时间关系的曲线，得到了注射压力对充填时间和型腔压力的影响规律，确定了最佳的充模时间、注射时间和注射压力；通过分析采用不同位置浇口注射时注射件关键位置单元的流动速度和压力分布，预测了注射件的成形质量，或可能产生的注射缺陷及位置，优化了浇口设置。
