查询词典 arrowhead

Cracking the rock open revealed an arrowhead loadstone, which magnetically drew itself to the opening in the rock wall.

他们把石头砸开，里面有一块箭头形的磁石，他们顺着磁石的指引，终于来到了石墙的入口处。

A small stone artifact, probably an arrowhead, with a blunt straight edge and a sharpened, crescent-shaped back, especially characteristic of the Mesolithic Age.

新月形石器一个小的石制的人工制造物，可能是个箭头，有钝的直边，尖的新月形背部，尤其是有中石器时代特点的

The results show that: Rhizome of Oldworld Arrowhead., water lettuce, and Brazilian milfoil. have a normal growth in eutrophicated water, and they also have a certain degree of purification capacity.

结果表明：慈姑、大薸、穗状狐尾藻在供试富营养化水体中均能正常生长，对富营养化水体均有一定的净化能力。

Grown alone, Rhizome of Oldworld Arrowhead , water lettuce, and Brazilian milfoil, have a DO increase rates of 62.5%, 50% and 50% in water respectively; Besides the total removal efficiency of BOD are 93.26%, 90.27% and 92.38%; What's more ,the total COD removal efficiency are 76.02%,, 71.58% and 79.76%. respectively.

单独种植的慈姑、大薸、穗状狐尾藻供试水体中DO的升高率分别为62.5%、50%和50%；对BOD的总去除率分别为93.26%、90.27%和92.38%；对COD的总去除率分别为76.02%、71.58%和79.76%。

Using three different types of living aquatic plants Rhizome of Oldworld Arrowhead, water lettuce, and Brazilian milfoil as test materials,we study a single planting of that three aquatic plants' impact on eutrophicated water DO, BOD, COD.

中文摘要：选择三种不同生活型水生植物慈姑（Sagittaria sagittifolia 、大薸、穗状狐尾藻为试验材料，研究了单一种植这三种水生植物对富营养化水体中的DO、BOD5、COD的影响。

It is true that he does finally incline to believe in the camp; and, being opposed, indites a pamphlet which he is about to read at the quarterly meeting of the local society when a stroke lays him low, and his last conscious thoughts are not of wife or child, but of the camp and that arrowhead there, which is now in the case at the local museum, together with the foot of a Chinese murderess, a handful of Elizabethan nails, a great many Tudor clay pipes, a piece of Roman pottery, and the wine–glass that Nelson drank out of—proving I really don't know what.

由于受到反对，他便写了一篇文章，准备拿到当地会社的季度例会上宣读，恰好在这时他中风病倒，他的最后一个清醒的念头不是想到妻子和儿女，而是想到营地和箭镞，这个箭镞已经被收藏进当地博物馆的展柜，和一只中国女杀人犯的脚、一把伊利莎白时代的铁钉、一大堆都铎王朝时代的土制烟斗、一件罗马时代的陶器，以及纳尔逊用来喝酒的酒杯放在一起——我真的不知道它到底证明了什么。

Perhaps it's Lake Arrowhead's lower profile that has saved it from overdevelopment, preserving its quiet beauty.

也许是湖镞的姿态较低，而免遭过度开发，保持其安静的美丽。

Perennial herb of the eastern United States having arrowhead-shaped leaves and an elongate pointed spathe and green berries.

美国东部的一种多年生草本植物，具有箭头形的叶子，一个伸长的、尖形的佛焰苞和绿色的浆果。

Instead of updating inveracious and insignificant stuff, why not focus arrowhead on something instructive, or something meaningful.

与其一直更新一些不切实际不重要的东西，为什么不将方向指向更新学习提高学习性的东西或者有意义的东西。

The absorption of 125 I and 3H in four aquatic plants was studied by solution cultivation. The results showed that arrowhead Sagittaria pygmaea Miq.

采用水培的方式研究了几种水生植物对125I和3H的吸收，结果表明，供试的4种水生植物中，矮慈姑（SagitariapygmaeaMiq。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。