查询词典 H-hour

A measure of the effect of the medium on the magnetic field B when subject to a magnetizing force H: B = 0 in SI system, B = H + 4πI in cgs system, where 0 is the permeability of free space.

是介质在磁场 B 中所受磁化力为 H 时产生的效应：在国际单位制中 B = 0 在厘米-克-秒制中 B = H + 4πI 其中 0 为自由空间磁导率。

Magnetic permeability: The ratio of the magnetic induction B to the inducing field strength H; denoted by the symbol :=|B|/0|H| 0 is the permeability of free space = 4π 10-7 weber/ampere meter (or henries/meter) in the SI system and 1 gauss/oersted in the cgs system, so that the permeability is dimensionless.

磁导率 磁导率：磁感应强度 B 与源场强度 H 之比，用符号表示：=|B|/0|H|自由空间磁导系数 0 在国际单位制中为 4π 10-7 韦伯/安培米，在厘米-克-秒单位制中为 1 高斯/奥斯特。因此磁导率是无量纲的。

A-Si: H photoconductor and nc-Si: H light blocking layer can be prepared easily in the same deposition system continuously.

此外，nc-Si：H阻光层与a-Si：H光导层在同一沉积系统中连续生长，制备方便。

Results In Pilocarpine group, the number of TUNEL positive neurons began to increase at 6 h postSE, peaked at 72 h postSE, and decreased at 7 d postSE.

结果 SE后6 h，Pilo组开始出现少量TUNEL阳性细胞；SE后72 h，达到高峰；SE后7 d，TUNEL阳性细胞开始减少。

HA increased level of NO by activating NOS after combining with H〓 and H〓 receptors; and on the one hand 5-HT caused brain microvessel endothelial cells constracting strongly, made the tight joint opening, increased the permeability of BBB, and on the other hand 5-HT increased the quantity of pinocytosis vesicle in endothelial cells and enhance the permeability of BBB after comining with 5-HT〓 receptor.

HA与H〓和H〓受体结合，激活NO合成酶，使NO含量增多而诱发BBB通透性增加；5-HT与5-HT〓受体结合，一方面引起脑微血管内皮细胞强烈收缩，使内皮细胞间的紧密连接开放，BBB通透性增高，另一方面可引起内皮细胞转运小泡增加，BBB通透性增高。

It can be shown that the wavelength is equal to h/p, where h is Planck's constant and p is the momentum of the eigenstate.

波长可以表示为h/p，这里h 是普朗克常数而p是特征态动量。

Taking advantageof the correspondence between self-adjoint pseudo-differential operator and real-valuedWeyl symbol of its own,we obtain that the critical phase volume charactertistic for thenon-localness of uncertainty principle is the first-order term of h and the higher-orderones of h are all omitted,where h is the Planck constant.

利用拟微分算子和实值的Weyl象征的对应关系，我们得到"测不准"的关键值是h的一阶项，其余项为〓。

1 Pan Pearl River Delta Physics Olympiad 2009 2009 年泛珠三角及中华名校物理竞赛 Q2 Spin Torque (16 points)题 2 自旋力矩(16 分) An electron has permanent angular momentum called spin that is fixed in amplitude h / 4π, where h is the Planck Constant, while its direction can be changed by external interactions.

电子具有固有的角动量 S ，叫做自旋，其方向可在与外界的相互作用下改变，其大小为固定的 h / 4π，其中 h 为普朗克常数。一导线载有电流 I，导线的下半部分由磁化了的导体组成，上半部分由非磁性导体组成。

Then the optimal conditions were decided as follows: the ratio of wall-material to core-material should be 8.0 to 2.0, with ployacrylic sodium as dispersing emulsifier, NH4Cl as acid catalyst, and with the time of pouring catalyst being 2 h, the pH value at end point 2.0, the temperature of condensation reaction under control about 70℃, the reaction time 3 h, the stirring speed 1000 r/min.

研究了壁材与芯材的比例、分散乳化剂、催化剂、反应温度和搅拌速度5因素对微胶囊产品的影响，得出最优化的工艺为：壁材与芯材的比例为m：m=8.0：2.0，以聚丙烯酸钠为分散乳化剂，氯化铵为酸性催化剂，加入速度以2 h加完，终点pH值为2.0，缩聚反应温度控制在70℃左右，反应时间为3 h，搅拌速度为1000 r/min。

The low temperature yellowing (35-38℃ yellowing) prolonged yellowing time (prolonger 12 h after 35-38℃ yellowing) and prolonged wilting time (42℃ wilting 24 h) during the curing process, which was beneficial to starch degraded and tobacco quality improvement.

烘烤过程中在35~38℃变黄，并在烟叶变黄后延长12 h和在42℃条件下凋萎12 h，有利于淀粉降解和烟叶品质改善。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。