坝

The variety of the water level during the period the ice jam is one of the phenomena that forming mostly in the ice jam segment.

这些地区河流冬季常形成冰盖、冰塞或冰坝，它们会带来各种冰凌灾害。冰塞期间水位的变化是冰塞河段最主要的现象之一。

The glacier is about two kilometres wide here and 10 kilometres of the main ice stream are visible.

特别是，这里最严重的危险和不稳定的短期冰坝的堰塞有很大关系。

The step junction between Three-Gorges Dam and Gezhou Dam is an integral unit. In order to enhance its passing-through capabilities and make shipping's passing convenient, expedite and in order, the Three-Gorges Joint-Sailing Administration Bureau established the dispatching system of "united dispatching and joint circulation", accumulated plenty of statistics and experience, and formed a set of practical operation principles and standard.

长江三峡坝区的三峡-葛洲坝梯级枢纽是一个有机的整体，为了提高三峡和葛洲坝枢纽的船闸通过能力，实现船舶过闸便捷、通畅和有序，三峡通航管理局建立了两坝通航&统一调度，联合运行&的调度体系，在实践中积累了大量的数据和经验，建立了一套实际操作原则和规范。

The simple calculation for stress isolines is brought about by a spline interpolation method,as well as the distributions of stress trace are given,which can provide more simple and direct stress field for designers.

混凝土重力坝应力计算的主要方法是理论计算法，分为材料力学法、弹性理论法和弹塑性理论法，但材料力学法至今仍被认为是计算重力坝应力和设计坝剖面的基本的常用方法[1，2]。

It also points out that crossing dam plan, study and development of the shape of suction head and desilting pipe are the key technical issues that needs to be solved by the plan.

同时指出，过坝方案、自吸式吸泥头体型研制、排沙管道等是该方案需要解决的关键技术问题。

Combined with the excavation blasting work of the left-bank abutment slope of Jingping Hydro-power station cascade-Ⅰ, the dynamic properties of slope under blasting vibration is analyzed. The advantages and disadvantages of different excavation methods are compared, which offers a reference for the engineering practices.

结合锦屏一级水电站左岸坝肩槽高边坡爆破开挖，分析了该工程边坡在爆破震动荷载作用下的动力特性，并比较了不同爆破方案的优劣，为工程实践提供了参考和依据。

According to the daily observation of saturation line, the water level of observation well and reservoir water level curves are attained by polynomial regression analysis.

运用多项式回归分析浸润线观测数据，拟合得出浸润线观测孔水位与库水位的函数曲线，求得尾矿坝浸润线矩阵。

As a native of Litchi chinensis, China is abundant in germplasm resources in the tropical and south sub-tropical zone. In Hainan province, Some big wild litchi trees and batches of wild litchi have been found in the tropical origenate forestry of Bawang, Wuzhi, Jianfeng, Diaoluo, and Jingu Mountains. In addition, there are 4,000hm2 of litchi seedlings scattered on Hainan island. They comprise a huge gene pool of litchis germplasm resources,Which is both bases of seedling selection at present and source of genetic breeding in the future.

中国是荔枝的发源地，种质资源非常丰富，仅海南就有4，000hm~2荔枝实生树，此外，在坝王岭、五指山、尖峰岭、吊罗山和乐东金鼓岭上还有成片的野生荔枝，一起构成了一个巨大的海南荔枝种质资源库，既是我们目前进行实生选种的基础，又是将来杂交育种的源泉。

The damming technique is relatively perfect now, but because of the problems in construction management are more and more severe, such as construction scheme and matching machine, which manifest the high construction expenses.

虽然碾压混凝土筑坝技术已达到较成熟的地步，但是由于采用不同施工组织方案和机械配套方面存在的施工管理问题越来越突出，这集中反映了碾压混凝土坝施工费用的巨大浪费。

Using maximum flooding surface and local explosure erosion surface as the correlation framework surface in the 4-th hierarchical base-level cycles, sand-body in the 3-th hierarchical base-level cycles formed in the 4-th hierarchical base-level cycles may be correlated layer by layer. The law of the sand-body and the characters of reservoir heterogeneity formed in the 4-th hierarchical base-level cycles are discussed. The study shows:①During early period of the 4-th hierarchical base-level cycle rising, subaqueous distributary channel formed, continuously stacked vertically, and migrated in limit range laterally, and channel sand-body stretches farther longitudinally, and lacks interbeds of mud rock and siltsand in sand rock, reservoir heterogeneity is relatively weak.②During mid-period of the 4-th hierarchical base-level cycle rising, subsaqueous distributary channel migrated actively, channel divided and converged strongly to form netted sand-body and sand sheet mainly, but interbeds of mud rock and siltsand increases gradually in sand-body, reservoir heterogeneity increased.③During later period of the 4-th hierarchical base-level rising and early period of the 4-th hierarchical base-level falling, reservoir sand-body was poor, and only form thin sand-body of subsaqueous distributary channel, subsaqeuous creveas and distal mouth bar, sand-bodys are surrounded by mud and silt rock.

进一步采用以第4层次基准面旋回中相当最大湖泛面的相转换面和具有区域性暴露侵蚀作用的层序边界面为等时地层对比框架的边界，对发育于MSC2—MSC4三个第4层次基准面旋回的第3层次基准面旋回内砂体进行了逐层等时对比，探讨第4层次等时地层对比格架内储集砂体发育分布规律，及储集砂体的非均质性特点，研究发现：①第4层次基准面上升初期发育的水下分流河道，砂体呈连续叠置、侧向迁移受限，纵向上呈长距离延伸的带状产出，砂体间泥、粉砂岩夹层少，储层非均质性相对较弱；②在第4层次基准面上升中期发育的水下分流河道侧向迁移活跃，纵向延伸过程中分流汇合作用强烈，以形成网状或席状连片砂体为主，但砂体间泥、粉砂岩夹层逐渐增多，储层非均质性增强；③第4层次基准面上升晚期和下降早期，不利于储集砂体发育，仅出现少量薄的水下分流河道、水下决口扇、远—河口砂坝砂体。

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。