覆盖

C using natural conditions, the use of appropriate materials on the concrete surface to be covered and watered, in the concrete cement hydration within a certain period of time required to maintain the proper temperature and humidity conditions.

采用覆盖浇水养护，利用平均气温高于＋5℃的自然条件，用适当的材料对混凝土表面加以覆盖并浇水，使混凝土在一定的时间内保持水泥水化作用所需要的适当温度和湿度条件。

The invention relates to a composite high-temperature electric heating element and relative producing method, which is formed by graphite, carbon silicon and molybdenum silicide.

本发明公开了一种复合高温电发热元件及其制作方法，它是由石墨、碳化硅和二硅化钼三种材料复合组成的电发热元件；在将石墨、碳化硅和二硅化钼三种材料复合组成电发热元件时，将石墨作为基础层，在石墨基础层上先覆盖上碳化硅层，然后再在碳化硅层上覆盖上二硅化钼层。

According to its biological characteristics, seedling cultivation experiments mulching by plastic film are carried out in nursery of Chaoyang County forest farm and fine results are achieved.

根据其生物学特性，在朝阳县林场苗圃地，进行了地膜覆盖育苗试验，取得了较好效果，文章就该树种的地膜覆盖育苗技术进行了报道。

The uniform flow of material is the key to the design of panel drawing die, and also the key factor for the development of panel products.

控制材料均匀流动，是覆盖件拉延模设计的中心环节，也是影响覆盖件产品开发的重要因素。

In natural vegetation area, where mainly are forest land, the yearly relative humidity and precipitation of spring are the driving forces to the change of NDVI. In brush and shrub area, the change of NDVI is driven by the precipitation and relative humidity of autumn. In grassland and rare tree bush grassland district, the main driving forces are human factors, and the driving mechanism is that farmland and cropping sown area are negative to the change of NDVI, but society factors are positive.

对于以林地为主的自然植被区植被覆盖变化，主要受到春季降水、春季湿度和年均湿度的正驱动，黄淮海地区的北部主要为干旱、半干旱区，因此春季降水偏多会利于植被生长；灌丛和萌生矮林区，秋季降水和秋季湿度对其植被NDVI变化呈负驱动；草原和稀树灌木草原区植被覆盖的变化，耕地面积、作物播种面积对之为负驱动，而其他社会经济因子则为正驱动。

The saving-water effect of Radish and Cabbage under PFM and appropriate irrigation,and the drought-resisting of radish seedling which seed was soaked by CaCl_2 were systematicly reseached by field observation and the experiment in door.The main results were summaried as follows:The soil temperature of 0~20cm cultivated layer was increased 3-4.5℃ in early growth period was only 1℃ in late growth period by PFM;there was more water saved up to 20.84mm in 0~60cm soil layer by PFM than no PFM in the early growth period of Radish;the yield and water use efficiency of Radish in L4 were exceeded respectively 10.1% and 21.9% of that contrast, the yield and water use efficiency of Cabbage in G4 were exceeded respectively 8.7% and 26.58% of that contrast, under PFM and appropriate irrigation.

主要研究结果如下：地膜覆盖在植株生长前期耕作层平均可增温3～4.5℃，在生长后期增温幅度减小，仅有1℃左右；地膜覆盖在植株生长前期可有效的保持土壤水分，在萝卜生长前期，使0～60cm土层内多储水20.84mm；在覆膜不灌水充分利用自然降雨的条件下生产萝卜，可比裸地正常灌水萝卜增产10.1%，水分利用效率提高21.9%；覆膜只浇一水生产甘蓝，可比裸地正常灌水生产甘蓝增产8.7%，水分利用效率提高26.58%。

At present the service functions like job website, human affairs agent, employment, leasing, head-hunting, evaluation, and international intellectual exchange are available, covering each link in human resources management and thus forming a multi-level, all-round, and perfect human resources service system.

中国湖南人才市场不断完善服务功能，提升专业服务水准，服务项目和业务覆盖范围不断扩展，目前市场具有人才网站、人事代理、人才交流、人才租赁、猎头、人才测评、国际人才交流等服务功能，覆盖了人力资源管理的各个环节，已经形成了多层次的、全方位的、完善的人力资源服务体系。

The insulation batts shall be approximately 89 mm (3.5 in) thick and Rsi 1.4 – Rsi 1.9 (R8 – R11), positioned directly in contact with the outlet box and slit to completely surround the flexible metal conduit.

测试天花板器具应装两层表面有覆盖或没覆盖的玻纤绝缘棉，彼此成90度，绝缘棉的厚度大约为89 mm (3.5 in)，电阻为Rsi 1.4 – Rsi 1.9 (R8 – R11)，直接与出线盒相接触，并将柔软性金属导线管缠好。

Ice covered waters surrounding the North Pole; mostly covered with solid ice or with ice floes and ''.

围绕北极的冰雪覆盖的水域；几乎全被大冰块或冰山覆盖。

Ice covered waters surrounding the North Pole; mostly covered with solid ice or with ice floes and icebergs.

围绕北极的冰雪覆盖的水域；几乎全被大冰块或冰山覆盖。

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。