查询词典 U-shaped

Through numerical simulation,the characteristics of goaf flow field and gas transportation under J-shape and U-shape ventilation systems were analyzed.

通过数值模拟，对比分析了J型通风和U型通风条件下的采空区流场及瓦斯运移特征。

Our factory is specialized in producing any of the following products: iodine sublimation tubes, connectors, Erlian ball on the wall, liquid convection experiments, and demonstration devices, U-type the highest minimum, capillarity, platinum and gold bars, Sheng liquid cylinder liquid internal pressure, small pressure, the nitrogen ball, scale straw, demonstration thermometer, water, electricity and gas, Newton tubes, a variety of test-tube funnel, chemical use test tubes, glass rods, Glue stick, glue the first dropper, all kinds of beaker , flask, measuring cup, graduated cylinder.

我厂专业生产下列产品：碘升华管，连通器，二连球，对器壁，液体对流实验器、演示器，U型最高最低，毛细现象，铂金丝棒，盛液筒，液体内部压强，微小压强计，二氧化氮球，刻度吸管，演示温度计，水电解气，牛顿管，各种试管漏斗，化学多用试管，玻棒，胶棒，胶头滴管，各种烧杯，烧瓶，量杯，量筒。

Whole-rock Rb-Sr isochron age of 114Ma in Yanbei granite porphyry and single grained zircon U-Pb age of 138Ma in Tashan granite porphyry indicate that these two tin-bearing porphyry both are the products of Late Yenshan magmatic activity.

岩背花岗斑岩的全岩 Rb-Sr 等时线年龄（114Ma）和塌山花岗斑岩颗粒锆岩 U-Pb 年龄（138Ma）表明，这两个含锡花岗斑岩都是燕山晚期岩浆活动的产物。

The formation age of Baishanzhi granodiorite measured by U-Pb method is 370±25 Ma, indicating the Hercynian period.

笔者首次利用锆石U-Pb方法测得白山子花岗闪长岩的形成年龄为370±25 Ma，属于华力西期。

It yields an Rb-Sr isochron age of 174.4Ma Ma (2σ), which is in accordance with their host granodiorite dated as 173.3±2.9 Ma by single-grained zircon U-Pb method.

黄铁矿Rb-Sr等时线年龄与花岗闪长岩体的单颗粒锆石U-Pb年龄十分一致，表明矿床的形成与岩体有密切的联系，花岗闪长岩体提供了矿床形成所需要的能量和部分流体，而地层也提供了部分成矿物质。

When using this method to isolate thrombin-like enzyme from crude venom of Agkistrodon halys pallas, the total protein yield and total activity yield of thrombin-like enzyme were about 0.3% and 64% respectively, and specific activity was more than 2000 U/mg.

从江浙粗蛇毒中提取类凝血酶时，类凝血酶的总质量收率约为0.3%，总活性收率约为64%，比活可达2000 U/mg。三步柱色谱；类凝血酶；蛇毒；江浙蝮蛇；分离纯化

In this chapter, we obtain the following conclusion: Let f=h+〓 be a univalent orientation-preserving harmonic mapping defined on the unit disk U such that f is convex in a direction and real on the real axis, and satisfies the normalization f (0)=0 and 〓, then f is typically real.

在这一章中，我们证明了如下事实：对于单位圆U上的单叶调和映照f=h+〓，如果它满足条件〓，且在其映照下单位圆的像域是一个方向凸的，则它必定是典型实照映射。

Hartnett added, As majority owners, the U.S.

Hartnett补充说：作为企业主要所有权人，U。

I know the list is too big, but i m impressed by the range of products u hav.

我知道目录是太大的，但是被产品 u hav 的范围有印象的 i m。

AND u WHITE HAWK we have more brain cells than you and it...

和U白黑鹰我们有更多的脑细胞比你这。。。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。