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Laddering is an investment strategy where investors structure their CDs or bonds to mature at regular intervals which are evenly spaced, such as rungs on a ladder .

阶梯是一种投资战略。按照这种战略，投资者将存款或债券的到期时间逐步均匀递增，就像梯子上的横档那样。

The study was conducted to investigate the effects of heat treatment on flesh leatheriness of cold-stored loquat fruits and the possible mechanisms. Freshly harvested loquat fruits were pre-treated with hot air at 38℃ for five hours and then stored at (1±1)℃ for 35 days. Fruits firmness, extractable juice rate, the activities of phenylalanine ammonium-lyase, peroxidase, polyphenol oxidase and polygalacturonase that were related to flesh leatheriness, and contents of lignin and pectin were analyzed at seven-day intervals during storage.

为阐明热处理对冷藏枇杷果实木质化败坏的影响及其机理，该研究先将枇杷果实用38℃热空气处理5 h，然后在(1±1)℃下贮藏35 d，并每隔7 d测定果实硬度、出汁率、苯丙氨酸解氨酶、过氧化物酶、多酚氧化酶和多聚半乳糖醛酸酶等木质化相关酶活性及果胶和木质素含量的变化。

In order to clearly understand the dynamics mechanism about broad-leaved Korean pine forest and simulate its dynamics mechanically, a simulation model is demanded through which we can simulate the long-term dynamics of BKPF under different pine cones picking intensity and hunting for grey squirrels in different intervals. By considering the effective dispersal of seeds by animals, the human disturbance and the masting behavior of Korean pine, a new gap model integrated seed-bank and regeneration dynamic model, based on the classical gap model, is established.

为了能够充分理解阔叶红松林的动态机制，准确模拟东北阔叶红松林的动态变化，探索出既能够保护好又能够利用好阔叶红松林的新途径，根据阔叶红松林的动态机制，在经典林隙模型的基础上，添加考虑了阔叶红松松林中动物对种子的有效传播、人工采摘干扰以及红松的结实特性，建立了红松种子库及其更新的动念模型更新子模型，使模型更能够反映阔叶红松林中的动态机制。

The big advantage of the Jackknife is that they can be used to evaluate the statistical properties of a statistic that is related to the data in a complicated, nonanalytical way. Apart from estimation of standard deviation, Jackknife can be used to estimate mean, median and even to construct confidence intervals.

大折刀法的最大优点是它能在一个统计量与资料的关系很复杂或无解析的表达式时，可用它估计统计量的统计特性，除了能得到标准偏差外，还可用来估计平均值和中值，甚至构造置信区间。

B. Fetal assessment consists of daily fetal movement counts and nonstress testing and/or biophysical profiles at periodic intervals.

胎儿评估包括每天数胎动和无负荷试验和/或周期性的生物物理监测。

B. Fetal assessment consists ofdaily fetal movement counts and nonstress testing and/orbiophysical profiles at periodic intervals.

胎儿评估包括每天数胎动和无负荷试验和/或周期性的生物物理监测。

Methods: 15 male New Zealand white rabbits underwen excision of an ellipse and a 0.5 cm×0.5cm defect was made in notal side of tunica albugineand, The animals were euthanized and specimens were harvested at intervals of 2, 6 and 12weeks, The specimens were stained by picrosirius and observed by polarimicroscope.

在15只新西兰兔阴茎背侧切除白膜5mm×5mm造成缺损，分别在术后2，6，12周（每次5只）取材，苦味酸天狼星红染色，偏振光显微镜观察。

The shorter of interruption duration, the more obvious interruption effects, and this support the motion opponency theroy. 3 The different intervals between priming and target were detected. Due to interruption of blank frame, the shorter interruption elicited positive proming effects, which is consistant with integration of temporal and spatial in the human brain. 4 The negative of the same direction is relationship to visual adaption and visual inertia effects.

本系列实验得到以下主要结果与结论：1插入空白图片，将导致特定运动方向的反转，而对二义的运动没有明显影响，反映了空白图片对正常视觉运动的阻断；2阻断时间越短，导致特定运动方向反转的几率越大，即阻断效应越明显，支持运动知觉对立理论；3考察不同间隔的启动——靶刺激，由于空白刺激的插入，启动——靶刺激间隔较短时引起的正性启动效应，与人脑系统对视觉信号的时间与空间整合和视觉惯性是一致的。4同向运动的负性倾斜效应与视觉适应有关。

This study thoroughly inspects reciprocal method and leap-frog method of EDM trigonometric leveling along with relationship between EDM height, ellipsoid height, and orthometric height. An experimental area with 200m, 400m and 600m span intervals were set up with vertical angle error ±1.5〞and EDM error ±（2mm+2×10-6×Smm）.

本研究规划实验区实地针对200m、400m、600m三种测段长，采用之全测站仪之垂直角中误差为±1.5〞，测距中误差为±（2mm+2×10-6×Smm），进行EDM三角高程测量，并对测量方法及观测成果精度进行分析，实际探讨短距离EDM三角高程代替水准测量的可能性。

The Olympic Games were part of the Panhellenic Games , four separate games held at two- or four-year intervals but arranged so that there was at least one set of games every year.

奥林匹亚竞技大会是泛希腊竞技的一部分，古希腊人在二到四年之间，会分别举办了四项不同的竞技，但是至少每年会安排一项比赛项目。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

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