开口的

The fourth milestone was in the embryonic stage of development . Vertebrates and echinoderms began to develop differentiated mouth structures from secondary openings off the blastopore ( an initial opening in the embryonic cavity ).

第四个重要事件出现动物的胚胎发育期，脊椎动物和棘皮动物开始在胚孔（即动物早期胚胎原肠的开口）相对的一端另行开口，并最终发育为成体的口。

Although 1 C formation method increased the battery capac-ity and the negative electrode's ability to absorb O2, it brought negative effects on the performance of high rate discharge, cycle life and uniformity. In the mean time, the performance of the batteries, produced by 0.5 C formation method, was well except for capacity.

指出采用较大电流开口化成制度，虽然可以提高电池的容量及负极氧复合的能力，但对大电流放电性能、循环寿命及电池的均匀性等都带来十分不利的影响；而采用0.5 C开口化成制度的电池，除了容量略低外，其它性能均很好。

In a remote mountains, have the hunter with a first-rate marksmanship, one day, he hunts into hill, going, encounter a batch of wolves suddenly, the hunter lifts a gun to want to hit, be in this is wolf mouth conversation, it is OK that you hit me, but I have a condition, the hunter says then you say, the wolf says you can hit me 3 guns, if you are hit,do not die me, do you make I ate you OK, it is OK that the hunter listens to have very much confidence ground says, the hunter opens two guns repeatedly, see a wolf still stand over, the hunter is very amazed, opened the 3rd gun again then, wolf or station are over there, the hunter sees him be defeated pull, say to the wolf you can eat me to pull, the wolf looks say you should take off the dress pull me eating you, the hunter agrees to pull, take off the dress then pull, when taking off last briefs, the wolf sees pull make off at once, running, the wolf encounters one countrywoman, countrywoman asks a wolf, you run what, the wolf says the thing that bets on hill to be pulled, did not think of to there still is a gun below him, countrywoman listens, the 2nd gun that tells a wolf him but very fierce, 10 years ago, I was hit by him one gun, cut still does not have heal now.

导读：在一座深山里，有一个枪法非常好的猎人，有一天，他进山打猎，走着走着，突然遇到一批狼，猎人举枪便要打，就在这是狼开口说话，你打我可以，但我有一个条件，猎在一座深山里，有一个枪法非常好的猎人，有一天，他进山打猎，走着走着，突然遇到一批狼，猎人举枪便要打，就在这是狼开口说话，你打我可以，但我有一个条件，猎人说那你说吧，狼说你可以打我三枪，如果你打不死我，你就让我吃了你可以吗，猎人一听很有信心地说可以，猎人连开两枪，一看狼还站在那里，猎人很吃惊，于是又开了第三枪，狼还是站在那里，猎人一看自己输拉，就对狼说你可以吃我拉，狼一看说你应该把衣服脱拉我在吃你，猎人同意拉，于是把衣服都脱拉，脱到最后一件内裤时，狼看到拉撒腿就跑，跑着跑着，狼遇到一村妇，村妇问狼，你跑什么，狼就把山上打赌的事说拉一遍，没想到他下面还有一棵枪，村妇一听，告诉狼他的第二棵枪可很厉害呀，十年前，我被他打了一枪，伤口现在还没愈合呢。

An opening and at least one ventilation hole are provided in opposite sides of the partition wall, respectively, so that a part of air and dust vortically moving in the cyclonic air flow chamber are introduced into the dust collection chamber through the opening and the air in the dust collection chamber flows back into the cyclonic air flow chamber through the ventilation hole.

在该隔离壁的相对的侧面提供开口和至少一个通风孔，使得在该旋风气流室中旋涡状地运动的一部分空气和灰尘通过该开口被引入集尘室中，并且集尘室中的空气通过该通风孔回流到旋风气流室中。

The study shows that the pressure transient curve of fractured wells in closed circular formation can be divided into six different flow regimes. In condition of the same fracture opening width and fracture length, compared to rectangular fracture, the pressure drop with tapered fracture is bigger, and the dimensionless pressure and pressure derivative curves are higher. In condition of the same fracture opening permeability, compared to linear declining and constant conductivity fractures, the pressure drop with exponential declining conductivity fracture is the biggest, and the dimensionless pressure and pressure derivative curves are the highest.

研究结果表明：圆形封闭地层压裂井的压力动态曲线可以划分为6个流动阶段；在相同裂缝开口宽度和相同裂缝长度的条件下，与矩形裂缝相比，楔形裂缝压力消耗大，表现为无因次压力及压力导数曲线越高；在相同裂缝开口渗透率的条件下，与导流能力呈线性降低的裂缝以及常导流能力裂缝相比，导流能力呈幂指数降低的裂缝压力消耗最大，表现为无因次压力及压力导数曲线最高。

Through the analysis of the torsional stress produced in the open sections vehicle frame s under typical operation conditions the calculating formula is achieveal,which leads to the stress distribution of the open section frame and the ideas of improving the distribution of the torsional stress are discussed.

通过对常见开口截面车架在典型工况时扭转应力的分析，推导出扭转应力计算公式，从而得出了开口截面车架的一些应力分布规律，提出了改善车架扭转应力分布的具体措施。对汽车车架设计方案的拟定和车架应力分析具有指导作用

The objective was to analyze allelopathic effect of oxygenic terpenoid on barnyardgrass. The results show that the main effects ofCarveol,Carvone,Menthone andCarvyl acetate have an downward parabolic curve, whileCedrol shows the opposite.

各单因子的主效应分析结果表明：香芹醇、香芹酮、薄荷酮和香芹基乙酸酯的主效应曲线均为开口向下的抛物线，而雪松醇为开口向上的抛物线。

Results MRVE of normal arteries can be seen round and smooth.We can see4～6grades of branches of the cerebral arteries by its opening;Arteriosclerosis detectedwith MRVE showed that the ramose number of blood vessel reduced;Vein were seen as a wide and flat canal.

结果 正常脑动脉血管MRVE表现为圆形光滑的管腔，可看到其4～6级分支血管的开口；动脉硬化在MRVE上表现为血管分支开口数目的减少；静脉血管表现为宽扁的光滑管腔。

Careful nasal endoscopy and CT should be performed on the patients of nasal sinuitis with deep headache or lateral headache complicated with resorptive bloody sputum.

对有深部头痛或一侧头痛患者伴有回吸性血痰等症状的鼻窦炎患者应进行详细的鼻内窥镜检查和鼻窦CT检查，手术中尽量扩大病变的蝶窦开口和上颌窦开口，手术后定期冲洗窦腔是防止复发的关键。

Careful nasal endoscopy and CT should be performed on the patients of nasal sinuitis with deep headache or lateral headache complicated with resorptive bloody sputum. During the surgical operation, doctors need to do their best to enlarge the opening of maxillary or sphenoidal sinus. It is the key to preventing recurrence to rinse the sinus cavity regularly after operation.

对有深部头痛或一侧头痛患者伴有回吸性血痰等症状的鼻窦炎患者应进行详细的鼻内窥镜检查和鼻窦CT检查，手术中尽量扩大病变的蝶窦开口和上颌窦开口，手术后定期冲洗窦腔是防止复发的关键。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。