查询词典 pit bottom

In the development of massive oil pool of normal cyclothem with sufficient reservoir energy and active edge and bottom water drive, the primary means of controlling the appearance of secondary bottom water and the intervention of water coning is to perforate only the upper part of the reservoir at limited interval so as to prolong the period of production and increase the amount of output without water cut.

本文介绍了大港油田港东六断块和羊二庄油田的块状砂岩油藏注水开发后，很快地由原始半底水变成全底水的情况，从而使水锥带来的油井减产进一步扩大。

We also find that among the three investment strategies we discussed – the momentum strategy, buying the top or the bottom decile portfolio of funds, adopting the momentum strategy gets a better Sharpe ratio if the emerging market, energy, and mineral funds are not considered. For the portfolio of emerging market, energy, and mineral funds, it is with better performance for the strategies of buying the top or the bottom decile portfolio of funds.

最后，以Sharpe ratio为比较各投资策略在各投资分类的基准，采取动能策略操作基金，在移除新兴、能源、矿业基金之投资组合中有较高的报酬；又以买入形成期表现最好及买入形成期表现最差的基金为操作策略时，在新兴、能源、矿业基金这一分类出现较佳之绩效。

Four-storied deckhouse arranged above poop deck at aft, emergency fire pump room arranged at fore, double hull and double bottom for cargo hold area, double bottom for E/R.

首部设有应急消防泵舱，货舱区域设置双壳、双层底，机舱设置双层底。

This study shows that the bottom-water ventilation was relatively stronger during the postglacial period than during the glacial and deglaciation periods, which is indicated by the oxygen concentration of bottom-water and the changes of microfossil assemblages.

首次在冲绳海槽识别出了末次冰消期浮游有孔虫δ13C的宽幅低值事件，并发现该事件与热带太平洋及其边缘海表层水的δ13C低值事件具有非常好的可比性，说明末次冰消期冲绳海槽表层水体的δ13C值低值事件可能是直接受热带太平洋表层水的影响所致。

The coating corrosion mechanism for the overall/partial fallen coatings of bottom plates is analyzed. It suggestes that the impressed current CP be used to protect the bottom plates,the dehydrator be reformed,and the corrosion inhibitor be added to the water.

分析了防腐层完全脱落区域钢板的腐蚀机理，及防腐层未完全脱落部分坑点的腐蚀机理，并在此基础上提出采用外加电流阴极保护法保护罐底板、改造油罐脱水设施结构、在存水中加注缓蚀剂等建议。

But cutting from bottom shoots would be better in quality, and of which the shoot and root develepment were significantly better than upper shoots, so the cuttings from middle and bottom shoots would be benefit to the propagation of Scabrous Deutzia.

结果表明：不同段位新梢扦插成活率差异不显著，但中基部插条繁殖的扦插苗质量较好，其新梢、根系发育显著好于梢段插条，因此在进行矮溲疏新梢扦插繁殖时以中基部段位为好。

Duckbill valve installation: 1, straight-through lift-type check valve should be installed in horizontal pipe on the road, vertical lift check valve and bottom valve is usually installed in a vertical pipe on the road, and the bottom-up flow of media.

一、鸭嘴阀的安装使用： 1、直通式升降式止回阀应安装于水平管路上，立式升降式止回阀和底阀一般安装在垂直管路上，并且介质自下而上流动。

Looking at the photo of eagle ray, notice how it can be 'divided' into 2 parts: top and bottom (part of bottom is visible on left wing of the ray).

纵观鹰射线照片，请注意如何可以'分为两部分：前和底部（底部分是左翼的射线可见）。

Top-secret tips: devil in the most general false bottom and the top of a two, about 50% of the chances to start the task after the NPC to the bottom of a test, if not false, then try to test the two.

绝密提示：一般假魔王在最下方两个和最顶上一个，大约50%的机率，开始任务之后，先试NPC下方一个，如果不是假的，那就尽量先试两头的。

Know to all, The refract wave exist an precondition, that is the bottom medium velocity is bigger than upper, then medium interface produce the refractive wave, if the medium exist the speed turn in reverse, and low speed in false bottom, the medium interface can not calculate.

众所周知，折射波存在的前提是下层介质的速度一定要大于上层介质的速度，这样才能在界面形成折射波，如果存在低速夹层和速度倒转，则利用折射波来求取表层结构难以进行。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。