有凹陷的

Main problems are as follows: failure to understand the major oil-controlling factors and accumulation law of oil, distribution characteristics of sand bodies, and ambiguousness of hidden exploration targets.

第三次资源评价表明它们都有大的地质储量，但对其勘探认识远远不够，主要表现在：凹陷内隐蔽油藏的主控因素及油气富集规律认识不清；储集砂体的展布特征认识不清；潜在隐蔽性目标勘探不明。

The reservoir-forming model of Huizhou Sag is almost two-step according to reservoir-forming stage, and there are single-source and two-source reservoir according to oil sources. There are three reservoir-forming models of abrupt slope type, apophysis type and gentle slope type according to structural form.

惠州凹陷的油气藏成藏模式，从成藏期次上分多为两期成藏，从油源上分有单油源和双油源两种成藏模式，构造形式上有陡坡型、隆起型和缓坡型成藏模式。

In whole test process, to compared with control group, hepatic hepcidin gene expression of test group on different phases had obviously differences with retinoic acid was administered. On early phase of test group , relative gene expression contents of hepcidin were gradually fall and the lowest level was on 8th、9th、10th day, then the hepcidin level gradually was ascendent. The curve was like a cavate parabola.

在实验周期内，模型组与对照组比较，肝脏铁调素基因表达在维甲酸灌胃的不同时间，存在明显差异：早期5、6、7天铁调素基因相对表达量逐渐下降，在第8、9、10天达到较低值，随后有回升，呈现凹陷的抛物线变化趋势；而对照组基本处于水平的轻微波动变化。

Results There is egg cover before insect egg and is wrinkled increase part behind it. The nipples having cilium,sanken having or not cilium and little holes are distributed symmetrically around the oral sucker of cercariae. The nipples having cilium are discovered in the rest,which may have sense function.

结果 虫卵前端有卵盖、末端有皱褶增厚部分；尾蚴的口吸盘周围对称分布着有纤毛的乳突，有或无纤毛的凹陷及小孔；具纤毛的乳突在虫体的其余部分也有发现，可能起感觉器的作用。

In the fourth member of Shahejie formation of Wang 73 well field in Dongying depression,typical lacustrine shoal-bar sand bodies are developed.

在东营凹陷王73井区的沙四段地层中，发育有典型的湖相滩坝砂体沉积。

The pouchlike midsection of a fishing net in which the catch is concentrated .

矿体集聚在凹陷的底部，而比它高的位置才有高品级的分布。

To make sure the petroleum migrating direction and pool-forming model in the Weixinan sag ,4 wells were chosen to do research on fluid inclusions and petrography.

为查明北部湾盆地油气运移方向及成藏模式，在涠西南凹陷选取有代表性的4口井进行储集层流体包裹体研究和系统的岩相学研究。

In a small, sunken garden by the roadside there were quantities of bright flowers.

路边的一个小小的凹陷的花园里有许多明亮的花。

Why do people have the inspiration to make liquid seals ? First of all, no matter how tight you press the solid seals , they can't fill in those uneven places on the joint face, so gap always exists. But liquid seals can fill in the dent and present good sealing function. Meanwhile liquid seals have stickiness so they have adhesive force to metal adjoining planes, which is helpful to seal. Besides the stickiness of liquid seals is high so they will not move easily, which can ensure the leak tightness.

人们之所以会有液体密封件的灵感，首先是考虑到固体密封件无论怎样压紧，也不能完全填满接合面上的凹凸不平，在界面上总会存有间隙，而液态密封件却能将全部凹陷填平，呈现出良好的密封效果；同时，液态密封件具有一定的粘性，对金属接合面具有一定的粘附力，有利于密封，而且液态密封件的粘度是很高的，很难发生流动，从而进一步保证了密封性。

The central structure belt in Fula depression is the main bonanza pool which is a potential area for oil and gas exploration .

凹陷中部构造带是油气主要聚集区，有良好的勘探前景。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。