沉积

Moreover, the influence of carbonate on the adsorption process was also studied. Under the anoxic condition, the AVS in Guanting Reservoir sediments controlled the partitioning of most of the metal ions between sediments and pore water.

对于渭河潼关沉积物，由于在组成上和黄土有很大的相似性，本文建立了与黄土类似的表面络合模型，并成功的模拟了潼关沉积物的表面酸碱反应特性及其对铜和镉的吸附特性，同时探讨了碳酸盐在吸附中的影响。

The thermal exchange process in the reactor of the HFCVD system is analyzed at first.

热丝化学气相沉积(Hot filament chemical vapor deposition，HFCVD)方法制备金刚石薄膜设备简单，成本低廉，适合大面积金刚石膜的产业化生产，其中衬底温度是沉积高质量CVD金刚石膜的重要参数之一。

The natural thermoluminescence in Quaternary sediment has stored accumulated irradiated dose since the sediment deposited.

第四纪沉积物的天然热释光中储存有自沉积以来的累积辐射剂量。

The result indicate that: the electrodeposition of zinc on nickel and tungsten substrates involves instantaneous three-dimensional nucleation. The coating is the best when the current density is 4mA/cm2 and the temperature is 80 ℃. The coating by the method of the impulse electrodeposition is better than the direct current electrodeposition. Especially when f is 100Hz, ton/toff is 2/8 and J is 8mA/cm2, the coating is clean and uniformity. The crystal size is nearly 0.3μ m .

结果表明：阴极反应为准可逆反应，锌离子在镍电极和钨电极上形核是三维瞬时形核半球形扩散长大过程，直流电流密度为4mA/cm2，温度为80 ℃时，镀层质量最好；脉冲电沉积得到的镀层要优于直流电沉积得到的镀层，尤其在脉冲宽度为2ms，脉冲间隔为8ms，电流密度为8mA/cm2时，得到的镀层光滑而均匀，颗粒大小接近0.3μm。

Using the sign if icance of these characters in the aspect of sediment environment, th is paper analyzed C and O iso tope ofQ ian jiang Saline lake and educed conclu sion s: there are good relat ivity betw een the change of clim ate and sedim ent\r\nenvironm en t and the con tent's change of C and O iso tope from high to low; it is aobturated saline lake of\r\ninnerland tow ard Q ian jiang saline lake, and the con ten t of C and O iso tope was primarily decided that Ciso tope is - 5‰ and O isotope is - 2‰.

主要介绍了碳和氧同位素的地球化学特征，利用这些特征在沉积环境方面的指示意义分析了潜江盐湖的碳、氧同位素并得出了以下认识：碳、氧同位素值的高低变化与气候的变化和沉积环境的变化具有很好的相关性；潜江盐湖是一个封闭的内陆盐湖，就该湖而言，其碳同位素值可初步确定为- 5‰，其氧同位素值为- 2‰。

The analysis of TOC andδ13Corg benefits from Well Chao-73, indicating that they response well enough to the Cretaceous paleoenvironment and paleoclimate. During the sedimentary period of Quantou formation to Qingshankou formation in Songliao basin, the water tends to rise and becomes anoxic, and the deoxidized water leads to the organic matter massively preserved. The paleoclimate changes from torridity and aridity to warmth and humidity, with the temperature evidently descengded, then ascended in a litter range. The result is basically consistent with paleoclimate by the palynological analysis.

朝73井TOC、δ13Corg有机地球化学指标的分析结果表明，TOC、δ13Corg的变化对该沉积时期的古环境、古气候也有很好的响应，该沉积期湖水位不断上升，湖生生物逐渐发展并繁盛起来，水体含氧量减少，湖底有机质的保存环境逐渐变为强还原环境，大量有机质被埋藏并保存，而古气候在泉头组/青山口组界线上下由炎热干旱变得温暖湿润，气温有明显下降，但随后又有小幅的上升，与孢粉分析的古气候变化特征基本一致。

We have make use of the tungsten filament and tantalum filament as the hot filament in the HFCVD experiment separately, to investigate the difference that hot filament influence to the velocity of the sediment.

本论文分别用钨丝和钽丝作为热丝进行金刚石薄膜沉积实验，来研究不同材质的灯丝对沉积速率的影响。

In addition,the timing of the potassic magnesianrich dacites provides a good constrain on the minimum depositional age of the underlying Habahe group and suggests the sediments of the group deposited before the early Devonian.

此外，该套火山岩的形成时代制约了其下覆的哈巴河群沉积上限，显示哈巴河群沉积于早泥盆世之前。

Haws are inconspicuous; may be pigmented or unpigmented.

瞬膜不显眼；有色素沉积或没有色素沉积。

Haws areinconspicuous; may be pigmented or unpigmented.

瞬膜不显眼；有色素沉积或没有色素沉积。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。