40cm

The blood flow speed of 358 cases ( 71.03 % ) was higher than 40cm / s.

358例（71.03%）血流速度>40cm／s。

There are higher soil enzyme activities at 20 ~ 40cm depths of orchard and farmland ;

20~40cm土层果园和农地土壤酶活性稍高；

40cm lower plant height .

株高降低40cm。

The subsoils ( 20 ~ 40cm ) were also polluted by Cd to some extent .

下层土壤（20～40cm）也受到了不同程度的污染，大部分剖面点达到了中度到重度的污染。

Exchangeable calcium and magnesium of 0 ~ 40cm soil layer was significantly increased by 48.2 % and 13.1 % in the second year .

交换性钙镁在第二年小麦播前增加分别增加48.2%和13.1%。

The use of the experimental group can be adjustable ring ( diameter 40cm ) for jumper training , the control group using standard jumper ring for training .

实验组运用可变径篮圈（直径是40cm）进行跳投训练，对照组运用标准篮圈进行跳投训练。

Of them about one third are in the 20 & 40cm layer of soil . The life-span of absorbing roots is short , only one week or so .

多分布在060厘米土层中，其中在2040厘米处约三分之一，吸收根寿命短，约1周左右。

The soil organic matter average content in 0 ~ 40cm depth soil layer in the middle and lower foot slope were significantly higher than that of the top of slope .

坡中、坡底0～40cm土层土壤有机质平均含量显著高于坡顶。

And in organic pattern are higher than conventional by 35.2 % , 5.7 % , - 2.9 % , 94.9 % in the soil of 20 ~ 40cm ;

有机生产模式20～40cm土层土壤有机质、全氮、全磷、速效钾含量分别比常规生产模式高35.2%、5.7%、-2.9%、94.9%；

The results showed that Pinus massoniana engineering young plantation with hole preparation ( 40cm × 40cm × 30cm ) has obvious soil and water conservation effects .

结果表明，穴垦整地（40cm×40cm×30cm）马尾松工程幼林地具有显著的水土保持效益。

At forest edge of 0 ~ 60cm layer , the root length density takes 95.9 % in layer of 0 ~ 120cm , mostly in layer of 20 ~ 40cm .

林缘处0～60cm土层内根长密度L占0～120cm土层内L的95.9%，其中20～40cm土层内所占分额较大，在40%～56%之间，是L密集区。

During the experiment , the control group using standard ring ( diameter 45cm ) for shooting practice , the experimental group with reduced diameter of the ring ( diameter 40cm ) were three-point shooting experimental training .

在实验过程中，对照组采用标准篮圈（内径45cm）进行投篮训练，实验组采用缩小内径篮圈（内径40cm）进行三分球投篮实验训练。

The rice straw mulch can improve the animal conditon of soil . The total amounts of soil animals of 0 ~ 40cm soil layer under rice straw is 1.87 times of that of the check .

稻秸覆盖能改善土壤动物总数状况，稻秸覆盖处理的0～40cm土层中，土壤动物个体总数是对照处理的1.87倍。

The distribution of soil microorganism is most abundances in 0 ~ 20cm in depth , the 20 ~ 40cm is less , the 40 ~ 80cm is the least .

不同土层深度土壤微生物分布以0～20cm土层最多，20～40cm次之，40～80cm最少。

At low tide water flows from the Bohai Sea . As a whole the direction is from west to east . The average velocity of flow is between 30cm / s and 40cm / s at surface layer .

低潮时潮流整体由西向东从渤海流出，表层平均流速介于30cm/s~40cm/s之间。

Furthermore , the seedling biomass and monthly dynamic changes of soil nutrients of 3 a root with 2a stock seedling with the density of 30cm × 40cm , in Chao'Er experiment sites were reviewed in this paper .

并对绰尔试验点密度为30cm×40cm的3a根2a干苗在生长期内的苗木生物量变化及土壤养分月动态进行了研究。

The treatment performance , for low concentration rural sewage , through constructed wetlands of different depths ( 60cm and 40cm ), was comparatively investigated by using pilot-scale apparatus in Lake Dian-chi area , Yunnan province , China .

采用了2种填充深度（60cm和40cm）的人工复合生态床对滇池地区低浓度农村生活污水进行了处理试验研究。

Conclusion : CDFI can help to diagnose the high grade malignant tumors of the salivary gland , especially when the PSV exceeds 40cm / s , but there is no value in the diagnosis the low grade malignant tumors .

结论：CDFI对低度恶性肿瘤的诊断价值不大，但对高度恶性肿瘤具有较高的诊断价值，当PSV>40cm/s时对恶性肿块的诊断具有重要意义。

The model BP ( 5,8,1 ) of forecasting 20 ~ 40cm had the maximal relative error , average relative error , maximal absolute error , average absolute error shoes were 14.5 % , 4.7 % , 3.0 % , 0.9 % , respectively .

预报土层20～40cm土壤平均含水量的BP（5,8,1）模型的最大相对误差为14.5%，平均相对误差为4.7%，最大绝对误差为3.0%，平均绝对误差0.9%。

Wheat straw mulch could improve soil salt vertical distribution in that salinity within 0 & 40cm soil layer maintained in a lower salt level which reduce ( degree ) of salt damage to crop , and in turn , crop yield could be increased significantly .

麦秸覆盖能够改善盐分在土体中的垂直分布，使土壤根系分布密集层保持较低盐分水平，缓解盐分对作物的危害，并有显著的增产效果。

As the result of the co-action of the erect stubble and vegetation cover , The position that the maximum soil wind erosion amount for conservation tillage farmland measured by sand sampler located in the height range of 18 ~ 40cm .

由于直立残茬和植被覆盖的共同作用结果，风洞集沙仪收集的保护性耕作农田最大土壤风蚀量集中在距地表18～40cm的高度范围内。

The content of salt in the soil in the south , which is 0 & 40cm in depth , is 0 . 15 % during the wet summer season , and is 0 . 366 % during the spring time which has less rainfall .

南部0&40cm深度的土壤，在夏季雨水较多时土壤含总盐量为0.15%，而春季雨水较少时则为0.366%。

There was an obvious vertical distribution rule of microbial number in the ridge of tobacco field . With the exception of azotobacteria , the number of all investigated microorganisms reduced by degrees with the increase of soil depth ( 0 - 40cm ) .

微生物数量在烟垄中呈现出明显的垂直分布规律，在0-40cm土层中，所考察的微生物种类除固氮菌外，其他微生物的数量随土壤深度增加均呈逐渐减少的趋势。

This experiment was carried in a wheat field with different water treatments under sprinkling irrigation conditions . Soil samples were obtained from each point under four layers of 0 ~ 10cm , 10 ~ 20cm , 20 ~ 40cm and 40 ~ 60cm .

本试验对喷灌区不同水分处理的麦田进行取样分析，分别测定0～10、10～20、20～40、40～60cm四个层次的土壤水分。