查询词典 concave line

Especially, it is found that there exists three types of relative permeability of water such as concave, convex to the water saturation ax and the reversed "S" pattern. The super-low permeability reservoir is sensitive to pressure, apparent with millipore undersaturation and water blocks. In this study, a new concept of irriducible undersaturation is brought up. And a new mode to describle the process of imbibition dynamics is used to reveal and confirm the mechanism of pinhole enveloping macropore as following: pendular ring of wetting phase gathers→it fills throat→it truncates nonwejting phase . The expression of pressure distribution and the equation of oil production are deduced under conditions of non-darcy linear seepage and non-linear seepage.

尤其发现水相相对渗透率曲线存在凹向、凸向含水饱和度轴及反S形三种形式；特低渗透储层的压力敏感性强，微孔隙的欠饱和及水锁效应显著，本文研究中提出欠束缚水饱和度的概念，引用一种描述渗吸动态即湿相液环聚集→充填喉道→截断非湿相的演化过程的新方法，更深刻地揭示和证明了&小孔包围大孔&机理；推导出了非达西线性渗流和非线性渗流条件下的压力分布表达式和油井产量方程。

Male flowers to 2.5 mm in diam.; sepals membranous, semiorbicular, adaxially concave, ladle-shaped, abaxially puberulent outside; filaments short; pistillode small, peltate, pubescent.

直径的2.5毫米的雄花；萼片膜质，半圆形，正面凹，勺形，外面背面被微柔毛；花丝短；退化雌蕊小，盾形，短柔毛。

Filaments connate into a tube; anthers somewhat concave at middle, appendages rounded, covering stigma head; pollinia 2 per pollinarium, oblong, pendulous.

花丝合生成筒；花药有点凹的在中部，附属物圆形，包括的柱头头状花序；花粉块2 每pollinarium，长方形，下垂。

Quinonyl compounds were reducted to phenolic compounds in high yields promoted by aluminum triiodide ,and after the reaction with dienophiles in Diels Alder reactions concave adductions were combined.

在现场制备的三碘化铝促进下，醌类化合物发生还原反应以良好产率生成酚类物，并且在原位与亲双烯体发生Diels Alder反应从而生成凹状加合

Inflorescence a raceme with 2 or 3(–6) spikelets, rarely a panicle with many spikelets, peduncle, axis, branches, and pedicels slender, glabrous, scabrous or pubescent along longitudinal angles, branches usually subtended by a scaly bract at base. Spikelets ± compressed at maturity, several to many florets; rachilla disarticulating below fertile florets, extended beyond palea of uppermost floret, internodes flattened or concave on side facing floret.

花序为一总状花序具2或3(-6)小穗，一圆锥花序具很多小穗，花序梗，轴，分枝和花梗纤细，沿着纵向的有棱的无毛，粗糙的或短柔毛的很少，成熟时的小穗多少压扁，数枚到多数小花；在肥沃的小花下面脱节的小穗轴，在最重要的小花的内稃以外延长，在边面对小花上节间被变平或者凹。

Apex of leaf blade retuse or concave, lateral veins obscure

叶片微凹的或凹面，侧脉不明显的先端 20 Hoya kerrii 凹叶球兰

Attachment scar concave, with umbilical tissue, margin with ringlike emergence.

附件痕凹，控制用的具组织，边缘具出现。

As a Iwagumi layout, I think this layout has not attained the perfection, but as a concave composition layout, using stemmed plants, the composition and total balance was excellent among the applicant in this year's contest, Especially colour and way of overlapping thicket of Rotala nanjean in the background in interesting, and despite of only single species thicket, they gave the layout perspective.

作为一个石景布局，我认为未臻完美，但作为一个使用有茎水草的鞍状布局，其构图和整体平衡在今年的所有参赛者中首屈一指。后景色彩鲜艳、重重密植的小百叶尤其引人入胜。虽然只有单一品种，但他们给布局带来良好的透视感。

Objective To discuss the effect of scleral concave pool trabeculectomy in combination with MMC and Healon on primary glaucoma.

目的探讨丝裂霉素C和透明质酸钠在巩膜潜池式小梁切除术治疗青光眼中的作用。

We notice that in the stretcher,when the light incidence on the concave mirror,it will bring the spheral aberration and the spheral aberration will arouse the negative dispersion.

我们注意到在展宽器中，光入射到凹面镜会带来球差，这个球差会带来负二阶色散。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？