最佳值

The current study presents a new clinical technology to detect the stability of dental implant precissively by using natural frequency detection methodology. The study also designs and sets up a compact dental implant stability detector for verifying the theoretical prediction and its usefulness.

本研究利用自然频率检测法设计稳固度检测仪，并配合理论模拟与实际临床需求，加以修正改良，期能得到更精准、更敏锐的稳固度检测值，以便对植体临床手术提供最佳辅助诊断工具。

We aim for 80% contrast as a general rule of thumb.

我们认为的最佳的对比度是80%，这可以作为一般的经验值。

Three diagnostic criteria for diagnosing AMI were designed, namely cTnⅠ+Myo, cTnⅠ+ H-FABP, and cTnⅠ+H-FABP+Myo. Diagnostic accuracy rating of the three criteria was then calculated and compared. Results Accord- ing to the ROC curves, the cut-off values of the three biochemical markers for diagnosing AMI were defined as follows: Cut-off cTnⅠ 0.5ng/ ml, Cut-off Myo 90ng/ml, and Cut-off H-FABP 5.7ng/ml.

绘制3种标志物诊断AMI的受试者工作特征曲线并确定其最佳cutoff 值，对设计出的3种诊断AMI的心肌标志物组合试验（cTnⅠ+H-FABP、cTnⅠ+Myo、cTnⅠ+Myo+H-FABP）的诊断准确度指标进行比较。

Ee value was achieved when acetophenone was chose as the substrate under the optimal condition.

研究了该催化剂催化的以苯乙酮为底物的不对称硅腈化反应，在最佳反应条件下得到了69%的ee值。

It involved the following aspects: choosing the optimal acidulous reagent, determining the optimal parameters of extracting technology of pectin , attempting the experiment of pectin de-coloration and purification.

盐析的最佳工艺为：温度控制在80℃，混合盐比为2：1，沉析时间为1.5h，沉析时pH值为3.8。用混合盐析得到果胶，产品得率7.6％，颜色灰白色，符合食品卫生要求。

The epoxy value and the iodine value of the final product under these conditions was 5.5% and 10 gI/100 g, respectively.

在最佳条件下所得产品的环氧值达5.5%，碘值为

From these simulation results, we analyze and discuss the influence of cavity boundary on Q factors of WG modes. Since there is scale size limitation due to diffraction limitation in microdisk, we also propose a novel design of photonic crystal circular-shaped (CD2) microcavity with well-sustained WG mode. We will apply the same optimization method on this microcavity named photonic crystal microflower CD2 (MFCD2) microcavity. And then this design is realized by a series fabrication processes and the measurement results will be analyzed and discussed.

由於微碟型共振腔在优化会有体积上的限制，故我们在这部分也提出一具有耳语廊模态之光子晶体修正共振腔，我们以相同的讨论结果作基础，将Q值最佳化的对象换成在小体积时也能有良好Q值表现的光子晶体，成为花型拓朴光子晶体共振腔(Photonic Crystal Micro-Flower CD2 Microcavity， PC MFCD2)，接著藉由制程方法实现该设计，并讨论其量测结果。

The lift course of hanging device on wheat no-tillage planter was simulated by using the software of ADAMS. Some important parameters were obtained such as height of the working part relative to ground, the distance between the working part and the rear wheel of tractor, the angle of road pass and the force of hanging point, etc. The key parameters of the hanging device and its best working parameter of hanging device were found out through optimization simulation. Simulation results showed that suspension point had minimum force when variable DV_1 and DV_2 gained corresponding maximum and minimum at scope of structure limit.

应用ADAMS软件对小麦免耕播种机悬挂机构提升过程进行了动态仿真，得到了工作部件的位置高度、工作部件与拖拉机后轮之间的间距、路面通过角以及悬挂点的受力等参数，找到了悬挂机构的关键参数，通过优化仿真，得到了悬挂机构的最佳工作参数，仿真结果表明，设计变量DV_2、DV_3在结构受限范围内分别取其最大值和最小值，悬挂机构悬挂点受力最小。

Through a great number of experiments, the paper put forward to shear test index of graded broken stone with self-invented instrument, analyzes its influence rule by varying gradation, water content, compactness, shear rate and lateral compression; studies systematically the changing rule of CBR, infiltration index and thermal conductivity by gradation; works out the suitable biggest particle size, key screen openings and range of their reasonable percentage passing; put forward to graded broken stone design methodology based on CBR and shear strength and construction method in perennially frozen soil zone.

本文通过大量试验，利用自行研发设备，提出了级配碎石的抗剪切性能指标，分析了级配、含水量、密实度、剪切速率、侧压力对抗剪切性能的影响规律；系统研究了级配对CBR值、渗水性能、导热性能的影响规律；通过CBR试验和抗剪切试验，得到了最佳级配最大粒径和关键筛孔及其通过率合理变化范围；提出了基于CBR值和剪切强度双指标控制的级配碎石组成设计方法及适宜多年冻土地区的施工工艺。

In this thesis, the theories and methods of GA are analyzed in detail , the trend of GA in recent times is briefly discussed. Because of the importance of image segmentation, two methods of color image segmentation based on GA are proposed. One is the surface of thresholds image segment method, the other is entropic threshold method. Two algorithms are realized through VC++ 6.0. After that, we compare the characteristics of two algorithms and prove that GA can be very well applied to solving image optimal problems.

本篇论文比较详细地论述了遗传算法的基本理论、方法，指出了算法的研究现状，由于图象分割的重要性，提出了两种基于遗传算法的彩色图象分割方法，即阈值曲面分割方法和最佳熵阈值分割方法，通过VC++6.0编程得到了实验验证，比较了两种算法的性能，证明遗传算法完全适用于图象的优化问题。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。