查询词典 shallow-draft

The bigger top tension will cause the wellhead to be over-pulled and increase the probability of wellhead collapse. As the mean drifting of drilling vessel or platform increases, the wellhead displacement and bending moment nearly linear enlarges. The greater current velocity may result in wellhead instability because of its limited bearing moment capacity. Therefore the drifting control is very important to subsea wellhead stability. The wellhead stability may be improved by taking measures such as enhancing the conductor bending strength, controlling scour depth on seabed, getting geological data sampling of shallow formations.

算例分析表明，水下井口的横向偏移及弯矩随张力比和海流流速的增加而大幅增大，顶张力过大会引起井口稳定性变差；随着钻井船或平台漂移量的增加，井口的横向偏移和弯矩近似线性增加，控制好钻井船或平台的漂移非常重要；由于井口承受弯矩的能力有限，较大海流流速情况下可能造成井口失稳；提高导管抗弯强度、控制泥线处管柱冲刷、获取浅部地层的取样数据等措施可以增强井口稳定性。

In order to know the effects of mulch-drip irrigation on soil enzyme activities of saline-sodic soil with shallow water table, activities of alkaline phosphatase, urease, and invertase around the dripper, within 30 cm in horizontal direction and 40 cm in vertical direction from the dripper during the reclamation process, were investigated. Changes and distribution of soil enzyme activities, also their relationships with principal soil environment factors were studied.

为了解地下水浅埋区重度盐碱地覆膜滴灌对土壤酶活性的影响，测定了重度盐碱地在滴灌利用过程中距离滴头不同水平位置（0～30 cm）和垂直深度（0～40 cm）的土壤碱性磷酸酶、脲酶和蔗糖酶活性，并对土壤酶活性的变化、空间分布特征及与土壤环境因子之间的相关关系进行分析。

Silvery and bluish drumfish of shallow California coastal waters .

加利福尼亚浅水中银白蓝色的石首鱼。

Silvery and bluish drumfish of shallow California coastal waters.

加利福尼亚沿岸浅水中银白带蓝色的石首鱼。

Silvery nd bluish drumfish of shallow California coastal waters .

加利福尼亚沿岸浅水中银白带蓝色的石首鱼。

This revolution was primarily a dry farming operation with springs and shallow hand-dug wells supplying domestic needs.

这次革命主要是旱田耕作而以泉水和人工开挖浅井提供生活用水。

At the beach, on which lay the body of the dugong, the water wastolerably shallow, but from this point the bottom of the lake slopedgradually, and it was probable that the depth was considerable in thecenter.

靠近儒艮搁浅的沙滩一带，湖水比较浅，可是从这里开始，湖底就逐渐倾斜下去，估计湖的中央可能相当深。

Firefighters are using bulldozers and other earth-moving equipment to build firebreaks and are drawing water from private agricultural canals and shallow lakes, he said.

"消防员们正在使用推土机和其他运土设备建造防火道并从私人灌溉渠和浅水湖中抽水。"他说道。

They have infested the shallow filmy brine of the Ebon Sea, becoming the dominant predator of the area.

它们在厄本海的浅滩一带大量繁殖，成为那个地区的优势物种。

Seahorses like to live in shallow waters amongst the seaweed and eelgrass.

海马的生命大约在3-10年之间，在它们的一生中会繁衍很多次后代。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。