侵蚀

The main mechanism leading to the alteration in thermal structure is the magmatic underplating, thermo-mechanic erosion and chemical erosion related with raise of asthenosphere interface.

引起华北东部中生代岩石圈热结构变化的主要机制是岩浆底侵作用和与软流圈上涌有关的热-机械侵蚀和化学侵蚀。

According to the statistics, there are 250,000 gullies in the Blackland area, cause 393,000 ha soil erosion.

据统计，黑土区内现有侵蚀沟25万多条，侵蚀耕地590多万亩。

With morphology characteristics of erosion concave of Ag and Pd contact materials in nitrogen and air being compared, influence on erosion, welding and breakdown voltage of contact for nitrogen and SF_6 being analyzed, influence on contact for the formic acid, toluene, carbinol and distilled water being analyzed, it was showed that the influence on performance parameters of relay contact for various atmospheres is very com...

通过比较触头材料Ag和Pd分别在氮气和空气中侵蚀凹坑的形状特征，分析了氮气和SF6等气氛对触头侵蚀、熔焊、耐压的影响，及甲酸、甲苯、甲醇、蒸馏水等对触头的影响，表明各种气氛对继电器触头性能参数的影响十分复杂，该影响涉及对电弧运动规律的影响和与材料的化学反应。

The results show that the mineral admixtures can reduce C3A quantity in the cement material, and the pozzolanic reaction can consume lots of hydration product-Ca2, Which makes specimens close-grained, has obvious prevention function towards the sulfate corrosion. The anti-sulfate corrosion effects of various mineral admixtures from finer to poorer in turn are as follows: 30% fly ash, 30% fly ash + 30% slag, 60% slag, 30% steel slag + 30% slag, 30% steel slag, 30% slag, the blank type.

研究结果表明：加入矿物掺合料降低了试件的胶凝材料中的C3A含量，其火山灰反应消耗了大量的水化产物Ca2，且提高了试件的密实度，对硫酸盐侵蚀具有明显的预防缓解作用；各矿物掺合料的抗硫酸盐侵蚀效果由优到劣依次为：30%粉煤灰，30%粉煤灰＋30%矿粉，60%矿粉，30%钢渣＋30%矿粉，30%钢渣＞30%矿粉，空白样。

The electrochemical reaction can be suppressed by forming a desposition film in the steel/concrete interface, which retards the attack by aggressive Cl(superscript -).

Na2PO3F能够在钢筋表面形成沉淀型保护膜，阻挡侵蚀性离子对钢筋的侵蚀。

Phase 1 started with field pea followed by spring wheat whereas phase 2 started with spring wheat followed by field pea.The objectives of this thesis are:1 to quantitatively analyze effects of soil chemical,physical and biological properties on soil quality and productivity under different tillage systems and the driving factors for the changes of soil quality under tillage in a long-term,2 to select the best soil quality assessment indicators,and 3 to establish soil quality assessment models that are suitable for the erodible environment of semi-arid region on the Loess Plateau.

通过分析3个轮作周期不同耕作方式下土壤理化性质、生物性质和生产力对土壤质量的影响，阐明长期耕作过程中土壤质量的演变特征及其驱动因子，筛选出适宜于黄土高原半干旱区侵蚀环境下土壤质量评价的代表性指标；并综合前人的研究，结合区域特点，建立适宜于黄土高原半干旱区侵蚀环境的土壤质量评价模型。

According to the material of field investigation and survey, tectonic erosion periods and their erosion are studied.

根据野外调查和实际测量资料，研究了黄土高原构造侵蚀期和期内造成的侵蚀。

Based on the data observed from 1989 to 1998 in Ziwuling, the change of soil erosion and soil physico-mechanical properties was studied after forestland reclamation.

在黄土高原现代侵蚀中，人为活动引起的人为加速侵蚀居于主导地位[1，2]。

This research reveals that dynamic action is the root reason for soil water erosion, and that law of conservation of mass and energy is the basic principle of soil erosion, and that the coexistence of erosion and sediment is a universal rule of soilwater erosion.

提出基于能量力学机理的 3个土壤水力侵蚀的新理论，即侵蚀平衡理论、最大梯度理论和水流侵蚀力理论。

Each run consisted in 30 - min dura-tion and two replications of each of five slopes were assigned.

细沟侵蚀是坡面侵蚀的主要方式，在坡面侵蚀产沙及其输移过程中占有重要的地位和作用。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。