Each migration, has an up and down method.
每个迁移都有up和down方法。
This is set up in its own thread during the init method of the servlet and taken down in the destroy method of the servlet.
这个类的实例是在servlet的init方法中在其自身的线程中创建，并在servlet的destroy方法中销毁的。
Other people stop at each new word and look it up in the dictionary, but this method can slow down your reading, affecting concentration and comprehension.
还有些人一遇到生词就停下来查词典，这种做法也会减慢你的阅读速度，会影响你不能全神贯注不能全面理解。
Use Method: With both hands grip tightly on the horizontal bar, lift the body up and down. It is just for two persons once.
使用方法：双手握杠，曲肘并作上下运动，禁止横向拉动双杠。该器材较适合于中、青年人群，限二人使用。
Top-down method is used first in global designing stage, and then bottom-up method is used in layout design.
首先采用自顶向下的方法进行版图全局规划，然后采用自低向上的方法绘制版图。
AHDL is used and FPGA device is chosen as target device in designing the intelligent traffic light control system, in which up to down designing method is applied.
使用AHDL语言，目标器件选用FPGA器件，采用自上向下的设计方法，设计智能交通灯控制系统。
By comparing the advantage and disadvantage of ramp current with other methods, ramp current method and up-and-down method are used to test sensitivity of bridge-wire Electrical Initiating Device.
对动态斜坡法与升降法测试原理优缺点进行了比较，在动态斜坡法测试敏感和钝感型电火工品发火感度试验的基础上，结合与升降法试验结果的对比，对动态斜坡法进行了研究。
Objective To set up a clinical practical method that is highly accurate in rapidly detecting and prenatal diagnosing Down syndrome.
目的研究建立一种临床可行的高准确性的快速诊断和产前诊断唐氏综合征的方法。
The sensitive frequency were measured using conduction method, and the radiofrequency sensitivity was tested and calculated in the condition of sensitive frequency based on the up-down method.
为了研究射频对电火工品的影响，利用传导方法分别测定了三种不同的桥丝式电火工品试样的敏感频率，然后在敏感频率条件下根据升降法对试样的射频感度进行了测定和计算。
Other people stop at each new word and look it up in the dictionary, but his method can slow down your reading, affecting concentration and comprehension.
另一些人则每碰到一个生词都要停下来查词典。这种方法会降低你的阅读速度，影响注意力集中和理解。
I understand that it can be hurtful and annoying, but I always feel pity for people whose only method of building themselves up is by knocking others down.
据我所知，它可以伤害和愤怒，但我总觉得人们的自身建设的行动的唯一方法可惜的是，打掉心。
Thus our method includes the front, back, left, right, up and down, and naturally it has the whole.
所以我们这个功法前后、左右、上下都来一下，这样，自然而然就整体了。
The row scan method is utilized to locate the up and down edges of the plate.
用行扫描的方法进行车牌的上下边界定位。
Further study is made on target velocity measurement of radar, double-channel filter method and another one which based on chirp up and chirp down signal are discussed.
对雷达测速方法作了较为深入的研究，讨论了双通道测速法和正负斜率线性调频脉冲测速法。
The grouping test method at four constant stress levels was applied for short life span areas while the stress up and down test method were used for long life span areas.
短寿命区采用四级恒定应力水平的成组试验法，长寿命区采用应力升降试验法。
When the effect of strengthening technology on material fatigue performance is investigated, up-and-down method is often adopted.
在试验研究强化工艺对材料疲劳性能的增强效果时，常采用升降法来进行。
The annulus testing technique, in which the instrument is up and down through the annulus space between the tubing and casing, is regarded as the best testing method at home and abroad.
从抽油井油套环形空间起下下井仪器，直接测试油井生产动态参数的环空测试技术，被公认为是抽油井最佳测试方案。
A method which control the step motor with 8051 microcontroller is introduced, some methods in speed-up and speed-down curve design are compared.
介绍了8051系列单片机对步进电机的控制方法，并且提出和对比了几种步进电机升降速曲线的设计方案。
K... the grouping test method at four classes of constant stress levels was applied for short life-span areas while the stress up-and-down test method was used for long life-span areas.
短寿命区采用四级恒定应力水平的成组试验法，长寿命区采用应力升降试验法。
Use Method: stand on the pedal, hold the handle with two hands and then do the up-and-down pedal movement and left-and-right turning movement after standing stably.
使用方法：双手握把手，两脚站于踏板上，两脚做上下脚步运动和站稳后向左右转动。
Computer generates real time control command to drive motor controls displacement and up-down pendulum Angle of hoist, its precise control is realized through this method.
由计算机产生实时控制指令驱动电机控制吊车位移、上下摆角，实现其精度控制。
A ventilation method of up-supply down-return and up-return down-supply interconversion was presented in this article to meet the requirement of air conditioning in wide space.
提出了一种以上送下回及下送上回互换来满足大空间空调所需的特点的送回风方式。
The invention provides a method for extracting coal bed gas by up-hole and down-hole combination, and relates to the technical field of extracting the coal bed gas (or named as gas).
井上下联合抽采煤层气的方法，涉及煤层气（或称瓦斯）的抽采技术领域。
Use Method: lie down on the camber and hook the feet at a rung. put the hands behind the head. Use abdominal muscles to sit up and return to original position.
使用方法：人体躺在器械上，用脚勾牢横杠，双手交叉置于脑后，利用腹部肌肉力量收缩坐起，缓慢还原，反复使用。
Also, this paper makes the serial experiment of the large samples up-and-down method with two details and takes the experiment data in note, and paints the up-and-down chart.
本文介绍了双细节升降法的试验流程，选取典型结构细节，进行了大子样试验，绘制了升降图。
Use Method: lie down on the camber and hook the feet at a rung. put the hands behind the head. Use abdominal muscles to sit up and return to original position. Repeat the same movement.
使用方法：人体躺在器械上，用脚勾牢横杠，双手交叉置于脑后，利用腹部肌肉力量收缩坐起，缓慢还原，反复使用。
Use Method: lie down on the camber and hook the feet at a rung. put the hands behind the head. Use abdominal muscles to sit up and return to original position. Repeat the same movement.
使用方法：人体躺在器械上，用脚勾牢横杠，双手交叉置于脑后，利用腹部肌肉力量收缩坐起，缓慢还原，反复使用。
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