查询词典 at first appearance

Prima facie: at first appearance; on the face of things

初步的，表面上的

Using GSA-〓 lectin histochemistry, the first appearance of microglia occurred at E13, usually stained as scattered amoeboid cells. From then on, the number of microglia increased steadily, reached a peak at postnatal day 7 (P7), and then reduced gradually to adult level. Generally the morphological form of microglia undergoes transformation from early rounded or ameboid to adult resting ramified as they differentiate during development.

使用凝集素GSA-〓亲和组织化学染色，本实验最早观察到小胶质细胞在胚胎13天（E13），为散在分布的圆形或阿米巴样细胞，随后细胞数量逐渐增多；总体而言小胶质细胞的形态遵循着由圆形或阿米巴样逐渐转向纤细分枝状的演变规律，不同阶段细胞形态各有其特点，在不同区域也存在差异；小胶质细胞的数量在生后第七天（P7）达到高峰，其后开始逐步降低直至成年。

Wang said a researcher at the Nanjing Purple Mountain Observatory team has been the subject of a follow-up study of these unidentified flying object at its first appearance in 1971, to August 29 of this time has been recorded are the 16th, but a has not been proved to be human launch vehicle.

王研究员说，南京紫金山天文台的一个课题小组一直在跟踪研究这类不明飞行物，它的第一次出现是1971年，到8月2 9日的这回已经是有记录的第16次，却一次也未得到证实是人类发射的飞行器。

Chemical antiquing solution may be obtained at your DIY center. This will produce an aged appearance. Coat lightly at first and then add additional liquid until you reach the finish you like.

化学仿古的方法可以通过你的手工得到，这样可以产生一种岁月的效果，先在铜上作漆膜，然后使用另外的一些液体，直到得到你想要的结果。

The first appearance of Calixtus II as pope was at a great council of the bishops of the south of France at Toulouse.

首次出现的Calixtus二教宗正处於一个伟大的理事会主教在法国南部的图卢兹。

As soon as I saw them shipp'd, and gone, I took two Guns upon my Shoulders, and two Pistols at my Girdle, and my great Sword by my Side, without a Scabbard, and with all the Speed I was able to make, I went away to the Hill, where I had discover'd the first Appearance of all; and as soon as I gat thither, which was not less than two Hours (for I could not go apace, being so loaden with Arms as I was) I perceiv'd there had been three Canoes more of Savages on that Place; and looking out farther, I saw they were all at Sea together, making over for the Main.

一见他们上船离开了，我就拿了两支枪背在肩上，两支手枪挂在腰带上，又取了一把没鞘的大刀悬在腰间，尽快向靠海的那座小山上跑去，正是在那儿我第一次发现野人的踪迹。我费了两个多钟头才到达那里，因为我全副武装，负担太重，怎么也走不快。我一上小山就看到，除了我刚才看到的两只独木舟外，还有另外三只在那儿。再往远处看去，只见他们在海面上会合后往大陆方向驶去了。

The comparative research results showed that:(1)Thediurnal variation of the net photosynthetic rates in the aquatic leaves was a "double-peak", with an various "midday-decline", the time of the peak value appeared at about 10:00 A.M. and 13:00 P.M., while that in the xeric leaves was showed with invarious peak value and "midday-decline"; The diurnalvariation of transpiration ratesof both aquatic and xeric leaves appeared as a single-peak, the appearance time of peak value of the latter was earlier than the former and gradually decreased in the afternoon; The stomatal conductances appearance time of both of them were close to that of photosynthesisrate ,reached to the maximum in the morning and then gradually decreased: Diurnal variation of intercellular CO2 concentrationshows that: both aquatic and xeric leaves increased at first, and then exhibit a tendency of ascending within narrow range.(2) The net photosynthetic rates, photosyntheticallyactive radiation, stomatal conductances and transpiration ratesof both two kinds of leaves showed positive correlation, The correlation degree among them was prominent, there was significant negative correlation between The net photosynthetic rates and intercellular CO2 concentration.

研究结果表明：(1)水生叶片净光合速率的日变化曲线呈双峰型，出现明显的&午休&现象，峰值出现在10：00左右和13：00左右，但旱生叶片表现出的峰型和&午休&现象不明显；两种叶片的蒸腾速率日变化曲线表现为明显的单峰型，旱生叶峰值出现时间早于水生叶，中午过后逐渐下降；两种叶片气孔导度峰值出现时间和光合速率相近，均表现为上午升高至最高，随后逐渐下降的趋势；两种叶片胞间二氧化碳浓度日变化表现为：整体上先下降，然后有一上升趋势：(2)两种叶片的光合速率与光合有效辐射、气孔导度、蒸腾速率呈正相关，全部达到显著水平；光合速率与胞间CO2浓度显著负相关。

This was Isinbayeva's first appearance at a Summer Games, but it is likely to be the first of many Olympic adventures for the 22-year-old.

这对于伊辛巴耶娃来说，还是他在夏季奥运会中的首次亮相。然而，对于22岁的她来说，也许这只是一个时代的开始。

At first appearance the boy seemed very shy .

乍看之下，这男孩似乎很腼腆。

Love at first sight.George loves Louisa at first sight for her eye-catching appearance and friendly manner.

George在第一眼看到Louisa时，就为了她抢眼的表现和友好的态度而对她一见钟情。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。