顶

This article elaborated the construction principle of two pipe jacking methods——Sludge-liquid balance method and air-pressure balance method , introduced the main equipments used, discussed the construction technology and the treatment measures, then summarized and evaluated the construction effects as well as the merits and disadvantages.

本文结合工程实例，论述了顶管施工中泥水平衡顶管法和气压平衡顶管法两种顶管法的施工原理，对其主要设备及作用进行了简单介绍，对顶管施工中技术及问题处理措施进行了详细阐述，并对施工效果和两种顶管法施工中的优缺点进行了总结和评价。

During capacitation Ca〓 was present on the outer surface of IAM and in the released acrosomal contents.

精子获能前内存Ca〓主要分布于顶体外膜内侧和顶体内膜与核膜之间，并在获能和顶体反应过程被动员利用；顶体反应精子Ca〓分散存在于释放的顶体内容物中和结合于顶体内膜外侧，可能与顶体酶的活性有关；（9）。

The effect of different agronomic measures No topping(T1),Topping(T2),Topping+K-2SO-4(T3),Topping+Applying IAA 1 time(T4),Topping+K-2SO-4+ Applying IAA 1 time(T5),Topping+K-2SO-4+Applying IAA 2 times(T6) on chromoplast pigment and its degraded products content in flue-cured tobacco leaf was studied.

研究了不打顶(T1)、打顶(T2)、打顶+追施K2SO4(T3)、打顶+涂抹生长素1次(T4)、打顶+追施K2SO4+涂抹生长素1次(T5)、打顶+追施K2SO4+涂抹生长素2次(T6)6种调控措施对大田期烤烟叶片质体色素含量及其调制后降解产物含量的影响。

By taking cotton fiber in high yield cotton field of north Xinjiang as the object, the niche-fitness theory were introduced, through analysis the niche-fitness of cotton fiber in three mono-topping and multi-topping intercrop system treatment, the result showed, it is acceptable that evaluate cotton fiber quality by niche-fitness, the niche-fitness value of cotton fiber at the middle part of the cotton plant is the biggest that topping inJul.10th and Jul.25th in this three treatment, moreover, with the increase of topping times, compare with it's top part of cotton plant, the niche-fitness of cotton fiber at the low part of cotton plant have a raise tendency, the niche-fitness value of top and low part of cotton plant in multi-topping treatment is bigger than what of mono-topping.

以北疆高产棉田棉纤维作为研究对象，引入生态位适宜度理论，对三个打顶次数不同的处理的棉花群体棉纤维生态位适宜度进行分析研究，结果表明：用生态位适宜度来评价棉纤维品质是切实可行的，三个打顶处理中7月10日和7月25日打顶棉株棉纤维生态位适宜度均为中部最高，并且随着棉花群体打顶次数的增加，其下部棉纤维生态位适宜度较上部有逐渐增高的趋势，与一次打顶相比较，其二、三次打顶棉株上、下部棉纤维生态位适宜度均升高。

Heritage include: geological sites, glorious carbonate洞顶and ground, the pure black lava wall and regarded as the most perfect lava cave system; sunrise peak posed by the tuff cone-shaped mountain, as tall as the fortress seaside, stunning scenery; peak Korea - Han Mt to waterfalls, rocks and different form of crater lakes and famous.

遗产包括：地质遗址，绚丽多彩的碳酸盐洞顶和地面，纯黑色的熔岩洞壁，被视为最完美的熔岩洞窟体系；日出峰，由凝灰岩构成的锥形山峰，如堡垒般矗立在海边，景色令人叹为观止；韩国最高峰——汉拿山，以瀑布、形态各异的岩石和火山口湖泊而闻名。

Zenith telescope天顶仪It felt as if we had traveled from nadir to zenith.

感觉上我们好像已从天底走到了天顶。

Floor space for the development of a small Dianzuo block, in the mountain massif,王顶堤block, with a total planning area of 3,228,203 square meters.

楼面面积的发展，一个小淀佐座山区地块，王顶堤块，总规划面积三百二十二万八千二百〇三平方米。

(Times New Roman小四号,加粗,顶格)Using the vertical polyacrylamide gel electophoresis, the differentiation of peroxide, catalase and esterase isoenzyme from roots, caudexes and leaves of three wild buckwheat were analyzed.

(宋体小四号，加粗，顶格)采用垂直板聚丙烯酰胺凝胶电泳对三份野生荞麦根，茎和叶的过氧化物酶，过氧化氢酶和酯酶的同工酶进行了酶谱分析。

KEEP IT BOUNCING \ 顶球 Soccer freestyler Dan Magness, right, attempted to reach a new Guinness World Record — 24 hours of keeping a soccer ball in the air — as his wife Julie, left, watched in London's Covent Garden Friday.

上周五在伦敦考文特花园，麦格理斯试图创造一项新的吉尼斯世界纪录——连续顶球24小时。他的妻子在一旁观看。

During the pipe pushing construction of the parallel steel water pipeline of Beidu-Yanger pipeline project in Ningbo, the pushing force in main pushing power station appeared unusual increasing and the construction had to be interrupted. Through the analytical comparison between theoretical and practical pushing curves as well as the analytical comparison between the tool pipe track and the form map of pipeline resting in soil, it was found that the excessive pushing force in main pushing power station was caused by excessive deviation adjustment angle which enabled the pipeline to over bend in a short distance.

在宁波市北渡－雅戈尔原水D1800mm钢管复线工程顶管施工中，出现主顶动力站顶力异常增大的现象，影响继续顶进施工，文章针对这一情况进行分析研究，通过理论顶力曲线与实际顶力曲线以及工具管所经轨迹与管道在土层中静止时的形态图的分析比较，得出主顶动力站顶力过大是因为在纠偏过程中纠偏角度过大，使管道在短距离内过度弯曲引起的。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。