第二

A self-drilling anchor (10) for use in a friable material (1) comprises a body (12) having an axis (13), a flanged rear end (14), a drilling front end (16) and a generally cylindrical portion (18) therebetween having an outer surface (20) with a thread (22) disposed thereon, wherein the body forks, beginning at a predetermined distance from the flanged rear end, into a first leg (24) and a second leg (26), the first leg extending forwardly into a drilling tip (28) and having a generally rearward facing shoulder (30) angled obtusely outwardly with respect to the axis, wherein the body (12) has an axial bore (32) for receiving an elongate fastener (2), the axial bore (32) extending substantially through the flanged end (14) and the generally cylindrical portion (18) and leading to the generally rearward facing shoulder (30), wherein the anchor (10) has a drilling mode wherein the second leg (26) nests behind the generally rearward facing shoulder (30) of the first leg (24), and an anchoring mode wherein the legs are pivoted apart from one another.

一种用于易碎材料(1)中的自攻螺钉(10)，包括：主体(12)，其具有中心轴(13)、带有凸缘的后端部(14)、用于钻孔的前端部(16)和位于所述后端部和前端部之间的通常为圆柱状的部分(18)，所述圆柱状部分(18)的外表面(20)上布置有螺纹(22)，其中主体从距离带有凸缘的后端部的预定的距离处开始分叉为第一腿(24)和第二腿(26)，第一腿向前伸入钻孔尖端(28)，并且具有相对于中心轴向外成钝角的通常面向后的肩部(30)，主体(12)具有容纳细长状紧固件(2)的轴向孔(32)，轴向孔(32)基本延伸穿过带有凸缘的端部(14)和通常为圆柱状的部分(18)，并且通向通常面向后的肩部(30)，螺钉(10)具有钻孔状态和固定状态，在钻孔状态，第二腿(26)套在第一腿(24)的通常面向后的肩部(30)之后，并且在固定状态，腿彼此转动分离。

The first is that a symplectic structure or a Poisson structure exists on the even dimensional phase space or on the odd dimensional phase space of the corresponding equations. The second is that there is another symplectic structure or another Poisson structure on the generalized phase space which consists of original phase space and independent variable space.

第一、系统在相空间上存在一个一般辛结构或者Poisson结构；第二、系统整体在包括了自变量的增广空间上存在一个一般辛结构或者Poisson结构；第三、第一个结构若是依赖于自变量，那么系统必然受到外力作用（偏微分方程也有特殊的情形，我们在第五章会加以说明），而第二个结构的则给出了第一个结构和外力之间确切的对称关系。

The second part of this dissertation is of the research on the second period.

文章的第二部分也就是对第二个时期的研究。

English is the official language of the two countries.

在第二部分中，即文章的第二段，集中描述了两地的不同之处。

A second network offset is calculated to account for the difference between the free running clock and the second network global time reference.

计算第二网络偏移以说明自激时钟和第二网络全局时间基准之差。

The valve bridge may be operatively connected to first and second engine valves at its first and second ends, respectively.

气门桥分别在其第一端部和第二端部可操作地连接至第一和第二发动机气门。

Base on the principle of the superposition of waves, active noise control and active vibration control is achieved by adaptively tuning a secondary source which produces an anti-noise of equal amplitude and opposite phase with primary source.

主动噪音控制及主动振动控制籍由适应性地调适第二控制点，使第二控制点产生与主要声源或振源大小相等、相位相反的干涉波，而得以实现噪音消除及振动抑制之目的。

Base on the principle of the superposition of waves, active noise control and active vibration control is achieved by adaptively tuning a secondary source which produces an anti-noise of equal amplitude and opposite phase with primary source. This thesis includes two parts of study which are shown as below.

主动噪音控制及主动振动控制籍由适应性地调适第二控制点，使第二控制点产生与主要声源或振源大小相等、相位相反的干涉波，而得以实现噪音消除及振动抑制之目的。

The first plurality of acoustic drivers and the second plurality of acoustic drivers may be ordered so that each pair of the first plurality is separated by one of the second plurality.

可以对所述多个第一声学驱动器和所述多个第二声学驱动器排序，使得所述多个第一声学驱动器的每一对被所述多个第二声学驱动器中的一个分开。

Essay 2: This paper examines the effect of obesity on earnings. It analyzes the 2001 National Health Interview Survey of Taiwan using the ordered probit model with sample selection in which earnings are defined as an ordered variable. We also transform the earnings from ordered variable to continuous variable and use the Heckman's two-stage model to estimate the effect.

第二篇：本文主要在探讨肥胖对收入的影响，并使用国家卫生研究院，民国90年国民健康访问调查资料(National Health Interview Survey， NHIS)来进行分析，并采两阶段的ordered probit with sample selection模型来进行估计，其中第一阶段为样本的就业选择问题，而第二阶段为样本在有就业的情况下，肥胖对劳动者收入的影响，而此收入为区间资料；另外，本文还将收入的区间资料转换为连续资料，以Heckman's two-stage的方法估计，并比较两估计结果。

Recall that, in the Kolmogorov axiomatization, measurable sets are the sets which have a probability or, in other words, the sets corresponding to yes/no questions that have a probabilistic answer.

延期开工的Kolmogorov宣布要衡量所有套职能有限许多坐标限制在于衡量子寅。换句话说，如果是/否的问题回答f可看的价值观念在许多最有限坐标，然后它有一个概率的答案。

The experimental results showed that the algorithm can filter singular points and remain fixity of the target edge.

实验表明：基于模糊理论的图像智能滤波方法比常规图像滤波方法运算量小，它既能去除奇异点，又能保持图像中目标的边缘不变性，具有很好的滤波效果。