查询词典 second-grade

This thesis tries to give an objective and comprehensive description of second culture acquisition, which includes the acquisition model of second culture acquisition, the result of second culture acquisition—interculture, and the "critical period" hypothesis for second culture acquisition.

在此基础上，本文分析第二文化习得的四种方式，描述第二文化习得特有的"中介文化"状态，并提出第二文化习得的"关键期"假说。

"The Second China Paper Packaging Industry corrugated packaging and printing exhibition-cum-high-level strategic seminars, and the second session of the China Paper Packaging Industry Color Printing and Packaging Exhibition and high-level strategic seminars, and the second session of the China Paper Boutique Packaging Industry Printing and Packaging Fair "in 2009 October 15 to 17 successfully held in Ningbo, show reached an unprecedented scale in more than 15,000 square meters, including Bost, Germany, BHS, Hubei Jingshan, this chang, Xu Heng ironwork, Yiu Branch, Yu-pang, 10000 Alliance, Shengding, Tokyo, Dexter, victory Albert, German steel, Grand View, open up, good friends, music Huang, big pine, sea power, Qatar, Ding Long, Branch Shenglong North Korea and Chang, Kam Sheung Hing, Ji Xing, Eiffel, Shengyuan, etc. are more than 160 domestic and international famous brand supplier exhibitors, fully demonstrated, including pre-press plate-making systems, tile lines, water-based printing slotting machine, slitting machine , cross-cutting machine, rotary die cutting machine, platen die-cutting machine, folder gluer, laminating machine, UV coating machine, Laminator, UV inkjet equipment, carton color box proofing equipment, including a variety of corrugated boxes, color box printing and packaging equipment, has attracted more than 9,600 industry carton color box packaging and printing business professionals to visit the exhibition, access to the industry wide acclaim, becoming in 2009 the second half of the paper packaging industry, the annual communication, making friends, dealing a big gathering.

"第二届中国纸包装工业瓦楞纸箱包装印刷展览会暨高层战略研讨会、第二届中国纸包装工业（宁波彩盒印刷包装展览会暨高层战略研讨会、第二届中国纸包装工业印刷包装精品交易会"于2009年10月15日至17日在宁波成功举办，展会规模达到了空前的15000多平方米，包括博斯特、德国BHS、湖北京山、今昌、旭恒铁工、耀科、誉邦、万联、盛鼎、东京文洪、胜利伟业、德钢、宏景、开拓、佳友、音皇、大松、海力、卡达、鼎龙、科盛隆、朝昌、锦上兴、冀星、埃菲尔、盛源等国内外160多家国内外著名品牌供应商参展，充分展示了包括印前制版系统、瓦线、水性印刷开槽机、纵切机、横切机、圆压圆模切机、平压平模切机、糊盒机、覆膜机、UV 上光机、裱纸机、UV喷墨设备、纸箱彩盒打样设备等在内的各种瓦楞纸箱、彩盒印刷包装设备，吸引了业内9600多名纸箱彩盒包装印刷企业专业人士前去参观，获得业内人士的广泛好评，成为2009年下半年纸包装行业内一年一度的交流、交友、交易的大聚会。

In order to obtain more general solution of second order linear differential equation with constant coefficients, which is important in theory and practice, on the basis of knowing a special of the second order linear differential equation with constant coefficients and by using the method of variation of constant, the second order linear differential equation with constant coefficients is transferred to the reduced differential equation and a general formula of the second order linear differential equation with constant coefficients is derived.

为了更多地得到理论上和应用上占有重要地位的二阶常系数线性非齐次微分方程的通解，这里使用常数变易法，在先求得二阶常系数线性齐次微分方程一个特解的情况下，将二阶常系数线性非齐次微分方程转化为可降阶的微分方程，从而给出了一种运算量较小的二阶常系数线性非齐次微分方程通解的一般公式，并且将通解公式进行了推广，实例证明该方法是可行的。

Moving up from 56-kilobit-per-second dialup connections to 500 kilobits per second is far more noticeable than upgrading from 500 kilobits per second to one megabit per second.

每秒在从第 56-kilobit-per-seco 拨号连接上面移动到 500 千位比从 500 千位升级更加显著每到一个的秒兆位每秒。

Based on the important results obtained from the present research on second degree price discrimination, this dissertation makes a systemic and more practical mathematics study on the side of the manufacturer angels, including further and more deeply research on monopoly manufacturer how to actualize second price discrimination under nonlinear demand function, Nash equilibrium of second degree price discrimination under the condition of competition with different demand functions, monopoly manufacturer how to actualize second

结果表明，其纳什均衡结果存在依赖于两厂商产品的市场占有率，并且两厂商需求区间的分段数越多，其纳什均衡存在的必要条件要求他们的实力越接近；第四章针对实际情况将确定性需求条件下厂商处于完全垄断状态下的二度价格歧视理论研究推广到不确定性需求条件下的二度价格歧视理论研究，更进一步地研究了垄断厂商在线性随机需求条件下的二度价格歧视模型，用计算机模拟了此模型的可行性，分析模拟结果得出了一系列重要结论，最后给出了更具一般性的不确定需求条件下的二度价格歧视模型，并严格证明了此模型的可行性；第五章对全文进行总结。

In a first lengthwise groove 6a, a second lengthwise groove 6b, and a third lengthwise groove 6c sequentially arranged in the width direction, first widthwise grooves 7a are arranged between the first and the second lengthwise grooves 6a and 6b in the length direction, and second widthwise grooves 7b are arranged between the second and the third lengthwise grooves 6b and 6c in the length direction.

相对于依次地沿所述横向排列的第一纵向沟槽6a、第二纵向沟槽6b和第三纵向沟槽6c，所述第一横向沟槽7a在所述第一和第二纵向沟槽6a，6b之间沿所述纵向排列，所述第二横向沟槽7b在所述第二和第三纵向沟槽6b，6c之间沿所述纵向排列。

Analyse and compare what adopt a variety of pair of methods, the Michael addition reaction of ester of acerbity second of second of hydroxyl of protection of benzyl of the response of close nucleus addition that uses second nitrile and ester of formic acid second certainly, chloridize, cyanogen, reaction that take off carboxyl generates 3- benzyl oxygen radical the fifth of the ten Heavenly Stem the method of 2 nitrile, detailed discussion the action that wait and the by-product that arise possibly reach the reactant in each pace reaction, activator, dissolvent avoid a method.

通过对多种方法的分析和比较，确定采用乙腈和甲酸乙酯的亲核加成反应、氯化苄保护羟基、氰乙酸乙酯的Michael加成反应、脱羧反应生成3-苄氧基戊二腈的方法，并具体的讨论了每一步反应中反应物、催化剂、溶剂等的功能和可能产生的副产物及避免方法。

The clamp device comprises the grip part connected with the clamp part through the linking part, with the clamp part composed of concave part and the first and second arms extended to both sides, the first concave slot horizontally going through the first arm, the second concave slot horizontally through the second arm, a U shape tunnel parallel with the horizontal surface formed by two arms and with the concave part, cylinder hole set inside the top and down side all symmetrical inside the second deep slot, rotary shaft with both ends insertable to the cylinder hole, linking pole component fixed on the rotary shaft, limit component set on the first arm locking the linking pole.

本发明提供一种夹取装置，该装置包括：握持部，夹取部通过连接部与握持部连接；夹取部包括：凹形部，及由其两侧延伸的第一臂和第二臂，构成容置空间；第一凹槽，水平穿设于所述的第一臂，第二凹槽水平穿设于所述的第二臂，分别平行于凹形部及所述两个臂构成的平面，形成U形通道；圆柱形孔，对称设置于第二深槽的上下侧壁内；转动轴，两端可插入所述圆柱形孔中转动；连杆组件，固定于转动轴上；限位件，设置在第一臂上，用于锁定连杆。

A hammer drill, in particular a chipper comprising: a body 2 having at least one support handle 4; an electric motor mounted within the body 2 ;an electric switch 22, capable of being switched on and off by a trigger button 8 connected to it, to activate or deactivate respectively the electric motor, wherein the trigger button 8 is moveable between two positions, a first position where the electric switch 22 is off and a second position where the electric switch 22 is on; a locking arm 38 moveably mounted on the electric switch 22 which, when the trigger button 8 is located in its second position, is moveable between two positions, a first position where it is disengaged from the trigger button 8 and a second position where it engages with the trigger button 8 and holds the trigger button 8 in its second position.

锤钻特别是錾，包括：本体(2)，该本体(2)具有至少一个支撑手柄(4)；安装在本体(2)内的电动马达；电开关(22)，该电开关(22)能够由连接到电开关(22)上的触发按钮(8)接通和断开，从而分别使电动马达启动或停用，其中该触发按钮(8)能够在两个位置即第一位置和第二位置之间移动，在该第一位置处电开关(22)断开，在该第二位置处电开关(22)接通；可移动地安装在电开关(22)上的锁紧臂(38)，当触发按钮(8)位于它的第二位置中时，该锁紧臂(38)能够在两个位置即第一位置和第二位置之间移动，在该第一位置处锁紧臂(38)与触发按钮(8)脱离，在该第二位置处锁紧臂(38)与触发按钮(8)接合并将触发按钮(8)保持在触发按钮(8)的第二位置中。

The traction arm includes: a first supporting plate slidably connected to a beam of the bench; a second supporting plate pivotally connected to the first plate for the rotation of the base about a first axis that is substantially horizontal and substantiallty at right angles to the front plane of the first plate for appllying the base to the repair bench; a third supporting plate pivotally connected to the second plate for the rotation of the base about a second axis that is substantially at right angles to the first axis; and pivoting elements for the rotation of the base about a third axis that is substantially at right angles to the second axis.

牵引杆包括：一可滑动地连接于修理台梁的第一支承板；一枢接于第一板、用于使底座绕一大体上水平且大体上垂直于将底座装在修理台的第一板的前平面的第一轴线而转动的第二支承板；一枢接于第二板、用于使底座能绕一大体上垂直于第一轴线的第二轴线转动的第三支承板；以及用于使底座能绕一大体上垂直于第二轴线的第三轴线转动的枢接件。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。