土层

Of root biomass was distributed in the soil 0～20 cm deep, 69.93% of that in the area 40 cm horizontally away from stem; 92.07% of leaf biomass on the plant part 3～6 m high from ground, 83.80% of that in the area 1 m horizontally away from stem; 84.05% of the stem and branch biomasses in the area 0.5 m horizontally away from stem.

97.48%的根集中于0～20 cm土层，69.93%的根分布于距干基40 cm的水平范围；92.07%的叶分布于3～6 m的垂直范围，83.80%的叶分布于距干基1 m的水平范围；84.05%的干枝分布于距干基0.5 m的水平范围。

The seeds, tubers and corms of the weeds mainly distributed in the 0- 15 cm depth paddy soil, and mostly executed veget

种子萌发主要在土壤表层，块茎萌发在0～15cm土层内；土壤含水量饱和至薄水层最有利于萌发。

In practical project, especially in the condition of soil with badly penetrating ability and lower groundwater level ,can adopt about one meter deepness manual soil laying on the greenbelt and can also design special manual soil depurating equipment around building to dealing with rainwater, which not only assures depurating effect but also saves occupying area and improves environment.

本论文的研究结果表明，经合理设计控制，利用人工加人细砂的土层处理雨水径流，可达到较好的处理效果，实际工程中，尤其是在土壤渗透性很差，地下水位较高等情况下，可以在绿地表层采用lm左右的人工土壤层，'也可在建筑物附近设计专门的人工土壤净化装置来处理雨水径流，既可保证处理效果，又可节省占地和改善环境。

As these supplies were used up, big drillers looked for similar formations in other countries.

当这些资源被开采完，大型开采公司又在其他国家寻找类似的天然气土层。

The results showed that the spatial distribution range of soil fertility in Qinling forest area on south slope was soil pH volue 5.97～6.89,organic matter 6.6～50.1 g·kg~-1, total N 0.5～3.8 g·kg~-1 ,available N 33.6～257.3 mg·kg~-1,available P 0.81～5.8 mg·kg~-1,available K 38.9～262.4 mg·kg~-1,clay particle content 11.3%～18.1%,capacity of exchangeable base 68.5～310.2 mmol·kg~-1 respectively; The spatial variation degree of available P, organic matter, and total N was big,whereas clay particle content and active acid pH value was small;the spatial variation degree of soil pH value, organic matter, available P, clay particle content, and capacity of exchangeable base decreased with the deep of soil,whereas soil total N、available N, and available K increased.

结果表明，秦岭南坡土壤肥力指标在整个土壤剖面空间分异范围分别为：土壤pH值5.97～6.89，有机质含量6.6～50.1 g·kg-1，土壤全N含量0.5～3.8 g·kg-1，碱解N含量33.6～257.3 mg·kg-1，速效P含量0.81～5.8 mg·kg-1，速效K含量38.9～262.4 mg·kg-1，粘粒含量11.3%～18.1%，阳离子代换量68.5～310.2 mmol·kg-1；其空间分异程度以速效P、有机质和土壤全N含量较大，土壤粘粒含量和土壤pH值较小；随着土层的加深，土壤pH值、有机质、速效P、土壤粘粒含量和阳离子代换量空间分异程度减小，而土壤全N、碱解N和速效K含量空间分异程度增大。

The influence of long-term application of fertilizers and tillage under conditions of 12-year rice-based cropping system on soil nitrogen fertility was studied on Taihu region of the south Jiangsu Province. The results showed that total N content in the soil layer of 0～5 cm reached 2.89% in the long-term fallowed soil. The treatment of fallow in combination with plowing every crop season reduced total N content to 2%, occupying 70%of the M value.

通过十二年的耕作和施肥长期定位试验研究表明，苏南太湖稻麦轮作地区，长期休闲的农田0～5cm土层最高含氮量可达2.89%，休闲田结合每季耕翻，全氮含量下降，只及最高含氮量的70%，保持在2%左右。

After two rice-wheat rotations, 11%–13% of applied labeled N remained in 0-60 cm soil (mostly in the 0-20 cm soil); leaching of labeled urea applied in rice season was little (only 0.6%–1.1% of the applied N accumulated in 20-60 cm soil), and the leaching of fertilizer N occurred in wheat season and the beginning flooding period of the next rice season; 47%–54% of applied fertilizer N was lost and ammonia emission and nitrification-denitrification were the main pathways.

水稻季施用的肥料氮向耕层以下移动很少，20—60 cm土层中累积肥料氮仅占施氮量的0.6%～1.1%，主要发生在小麦季及水稻泡田时期，肥料氮损失占施氮量的47～54%，氨挥发和硝化反硝化气态损失是主要途径。

Seen from the functional group, perennial grasses and forbs had stable compositions, but compositions and number of shrubs, half shrubs, small half shrubs, annuals and biennials were unsteadiness, where aboveground biomass in warmed plots was much difference with control. Nitrogen addition may enhance aboveground biomass obviously from latter growth stages.

施用氮肥的效果在植物生长后期才明显的表现出来，施氮样地地上生物量明显提高；增温和施氮作用使地下生物量发生了一定变化，但无显著差异；通过多元逐步回归发现，影响植物群落地上生物量和地下生物量最显著的因子是10-20cm土层的土壤湿度。

Based on soil permeability and its two damage mechanisms (i.e. tensile failure and shear failure), a new method for determining critical thickness of base plate of foundation pit is presented based on elastic theory.

根据基坑底板土的渗透性及其破坏机制，基于弹性力学理论，按受弯拉裂破坏模式和剪切破坏模式计算确定基坑底板土层临界厚度，通过算例和分析，与传统确定临界厚度的计算方法进行了对比。

It is the first time for the fininte element method to analyse the space frame supported on...

文中对置于同一土层上的典型框架分别采用刚性基础、筏基及独立基础三种情况进行了分析比较。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。