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A kind of molecules bearing two alkyl chains connected with a fatty acid amide bond, and the number of carbon atoms in the alkyl chains is the same.

我们研究了一系列含有酰氨基团的分子界面聚集行为,其分子两边的碳链长度不同,但是总碳链长度相同。

Kenaf phloem bundle fiber layers were separated with a acidified sodium chlorite treatment with an additional ammonium oxalate treatment.

采用亚氯酸钠冰醋酸和草酸铵处理,将不同部位的红麻韧皮部束纤维进行分层,并-测定各束纤维层的纤维细胞长度,探讨红麻韧皮部纤维细胞长度的分布规律。

Measure two or more points and automatically get segment length, total length and wall area.

两个或两个以上的测量点,并自动获得部分长度,总长度和管壁面积。

1 An appliance shall be provided with a length of attached flexible cord and an attachment plug for connection to the supply circuit, or shall have male pin terminals that accommodate a detachable power–supply cord.

11.1.1 电器必须配置一定长度的软线并附带插头同电源电路连接,或必须装设公端子去连接可拆卸之电源线,软线的长度必须在表11.1的规定值之内。

Butt Weld and docking and corner combinations Weld, in Weld ends located arc plate and extraction plate in igniting board then leads to the welding seam, joint halfway shall weld joints in front of 2.0 mm Department Firing arc, welding pieces after preheating rod will return to weld the origin, pool filled to the required thickness, before forward welding; Welding speed : Isokinetic welding requirements to ensure weld thickness, width uniform, which masks to look for hot metal and slag bath equidistance (2-3 mm)%; Arc welding rod length : different models and determined that the general requirements of arc length is stable, acid electrode generally 3-4 mm, 2-3 mm normally alkaline electrode%; Welding perspective : According to determine the thickness of two pieces of welding, welding angle has two aspects : First, the angle between the direction of the rod and welding of 60-75 ; The second is the angle between two electrodes and welding around, the same thickness as welding, welding and welding pieces incident angle of 45 ; When the thickness ranging from welding, welding electrode and thick and thin pieces of welding electrode side angle greater than the angle between the side pieces; Arc : admission to the end of each weld should be filled crater, in the direction opposite to the direction of the back-arc welding, arc welding unchanged inside pit in 1974, to prevent the crater bite of meat.

对接焊缝及对接和角接组合焊缝,在焊缝两端设引弧板和引出板,必须在引弧板上引出后再焊到焊缝区,中途接头则应在焊缝接头前方15~20㎜处打火引弧,将焊件预热后再将焊条退回到焊缝起始处,把熔池填满到要求的厚度后,方可向前施焊;焊接速度:要求等速焊接,保证焊缝厚度、宽度均匀一致,从面罩内看熔池中铁水与熔渣保持等距离(2~3㎜)为宜;焊接电弧长度:根据焊条型号不同而确定,一般要求电弧长度稳定不变,酸性焊条一般为3~4㎜,碱性焊条一般为2~3㎜为宜;焊接角度:根据两焊件的厚度确定,焊接角度有两个方面,一是焊条与焊接前进方向的夹角为60~75 ;二是焊条与焊接左右夹角有两种情况,当焊件厚度相等时,焊件与焊件夹角为45 ;当焊件厚度不等时,焊条与较厚焊件一侧夹角应大于焊条与薄焊件一侧夹角;收弧:每条焊缝焊到末尾,应将弧坑填满后,往焊接方向相反的方向带弧,使弧坑甩在焊道貌岸然里边,以防弧坑咬肉。

According to the trial, the maximum length of 22.5 m, precisely Fujian beam bridge with the greatest length match.

根据试验,其最大长度为22.5米,恰恰与福建梁式桥的最大长度相吻合。

In this paper, the relation between differential driven ratio accuracy and the common normal length error of cylindrical bevel wheel has been found by experimental method, which provides a efficient way for cylindrical bevel wheel manufacturer to control the common normal length error of the wheel.

通过实验研究,寻找出差动传动比的精度与斜齿圆柱齿轮的公法线长度误差的关系,从而为斜齿圆柱齿轮的加工提供一个可以控制斜齿圆柱齿轮公发线长度误差的有效方法

The version number field shall contain the value "3", the reserved field shall contain the value "0". The length field shall contain the length of the entire packet including the version number, the reserved and the length fields as a 16-bit big-endian word.

目前版本号应该填充为&3&,保留字段填&0&,长度字段应该填充整个包的长度(包括版本号和保留位的字段长),以16位的大尾巴表示。

Our algorithm stores a transaction in both HIV format and HIL format,and uses the information contained in HIL format to reduce the number of bit-wise "AND" operation.In this way,the number of "AND" operation in HIV format is equal to the number of non-zero figures in HIL format,having nothing to do with the length of the data in HIV format.

我们提出的挖掘高效用长项集的算法同时以水平项目向量(Horizontal item-vector,简称HIV)和水平项目列表(Horizontal item-list,简称HIL)两种格式存储事务,并利用HIL格式数据提供的信息减少比特级逻辑&与&运算的次数,使逻辑&与&运算的次数等于HIL格式数据的长度,与比特向量的长度无关。

On the basis of analyzing the blasting characteristics of rock at bench slope in open-air blasting,this paper puts forward a calculation model of front-row burden,and deduces an approximate formula for calculation of reasonable front-row burden length for open-bench blasting ,which can be used as reference for blasting design.

在分析露天台阶爆破时台阶坡面岩石爆破特点的基础上,提出了台阶爆破前排抵抗线长度计算模型,从而推导出计算合理前排抵抗线长度的近似公式,可供爆破设计时参考。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力