查询词典 U-shaped

At first, this age-dating approach was used to estimate the age of G-dwarf stars with Th/Nd chronometry. Recently, it has been used to evaluate the age of halo field stars and globular cluster stars with the Th/Eu and U/Th chronometers.

这种方法最初是利用元素对 Th/Nd 来确定 G 矮星的年龄，近年来开始利用元素对 Th/Eu 和 U/Th 来确定晕族场星和球状星团内恒星的年龄。

One group inhaled 20 ml of 5% atomized sodium chloride solution and 4 000 U of α-chymotrypsin, the other inhaled only 20 ml of 5% sodium chloride solution.

为探讨干咳患者促进排痰的方法，用5%氯化钠溶液20 ml加α-糜蛋白酶4 000 U雾化吸入与单纯5%氯化钠溶液20 ml雾化吸入作比较。

Experimental group received exposure of chymotrypsin at a concentration of 4000 U/mL at tendon suture site, while the control group received a concentration of 0.9％ saline solution.

实验组向鞘管内滴注4 000 U/mL的糜蛋白酶1 mL，对照组采用生理盐水滴注。

The dissolution of offload valve spool: Using circlip pliers remove the valve core and valve located at the junction of the circlip, and then pipe clamp screwed up spool, remove the inside of the cylinder, valves, O-rings, U-type ring, spring and immersed into the cleaning agent, and then split out the valve on the inlet, the whole body into the soaking, this time, the demolition process by Dutch valve has been completed.

拆减荷阀阀芯：用卡簧钳取下位于阀芯与阀体连接处的卡簧，再用管钳拧出阀芯，取出里面的气缸、阀片、O型圈、U型圈、弹簧并放入清洗剂中浸泡，再拆出阀体上的进气口，将整个阀体放入浸泡，此时，减荷阀的拆卸过程已完成。

In the meantime, the client must choose explain the medium that collarband makes get stuck or U aegis regards safe attestation as.

同时，客户必须选择申领口令卡或u盾作为安全认证的介质。

In this paper, firstly the elimination tree theory is introduced in brief, and the structure of Jacobian matrix is determined by use of symbolic factorization; then by use of sparse vector method each column of lower triangular matrix L and each row of upper triangular matrix U are solved.

介绍了消去树理论，并采用符号因子分解技术确定雅可比矩阵的结构，然后采用稀疏向量法求取L阵的每行和U阵的每列。

U The origin of PMD, techniques in PMD compensation, design requirements for adaptive logic control unit are reviewed and summarized compendiously.

u 简明扼要的回顾和总结了PMD的起因、PMD补偿技术、自适应逻辑控制单元的设计要求。

U plate production, with a complete circuit, if the hardware of interest, this is a rare book.

详细说明： u盘制作，并附有完整电路图，如果对硬件感兴趣，这是一本不可多得的好书。

As a kind of complete orthogonal polynomial system, U system has many good properties such as orthogonality and convergence.

作为一种可选定次数的完备正交多项式系统，U系统所定义的矩具有标准正交性、收敛性等优良性质。

We alsostudy the Lie skew multiplicative bijective maps on B that is, the maps satisfyingΦ(AB- BA~*=ΦΦ-ΦΦ~*, and show that these maps must be of theformΦ=UAU~*, where U is a unitary or a conjugate unitary operator.

刻画了B(H是复Hilbert空间)上的Lie-skew可乘双射即满足Φ(AB-BA~*=ΦΦ-ΦΦ~*的双射，结果表明这样的映射一定是UAU~*的形式，其中U是酉算子或共轭酉算子。

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。