查询词典 h.

Overall heat transfer coefficients for metallic stirred reactors are about 40 Btu/h-F- ft^sup 2^; for glass-lined reactors they are lower, around 30 Btu/h- F-ft^sup 2^.

金属整体加热搅拌反应器传热系数约40 Btu/hF-英尺2 ^ ^燮，为搪玻璃反应堆他们较低，约为30 Btu/h-的F -英尺2 ^ ^燮。

The average methane emission rate in the littoral zone of Huahu Lake, ZoigePlateau is 0.315 mg·m~(-2)·h~(-1), with evident spatial and temporal variations.

若尔盖高原花湖湖滨湿地在植物生长季(6至8月)，甲烷排放平均速率为0.315 mg·m~(-2)·h~(-1)；不同月份间甲烷排放速率存在差异，分别为：-0.054、0.471、0.493 mg·m~(-2)·h~(-1)。

By statistical analysis to a large number of data collected from the reliability test of 120km/h raising speed wagon,this paper,based on the theory of reliability engineering,elaborated the reliability of the tested wagon in the field of running safety,maintenance support,failure mode effect and criticality.

通过对120km/h提速货车可靠性试验中收集的大量故障数据进行统计分析，根据18万km的阶段试验数据分析与推断，利用可靠性工程的理论，对货车提速到120km/h运行的可靠性，做出初步的结论性判断，并提出了今后在铁路车辆设计、制造、试验及维护保障管理等各方面，全面引入产品可靠性质量管理理念，进行相应的可靠性深入研究。

Theoretical calculations on a series of N-H���O=C hydrogen bond trimers were carried out using the MP2 method. We investigated the effect of substituents in hydrogen bond donor molecules on their hydrogen bond strength.

使用MP2方法研究了氢键三聚体中N-H…O=C氢键强度，探讨了氢键受体分子中不同取代基对N-H…O=C氢键强度的影响。

The response of Fos-positive neurons peaked at 4 h, then decreased.4h after acute cardiac injury, the influoence gray scale of GFAP positive-astrocytes significantly increased in Nucleus Tractus Solitarii.

急性心肌损伤后4 h GFAP阳性星形胶质细胞荧光强度明显增强，24 h达到高峰然后下降。

The paper presents an introduction to the structure of an adjustable refractory belt used in a quasi-industrial study, describes in detail test results of a 130t/h pulverized coal fired boiler's adjustable refractory belt, accompanied by an analytical discussion.

简单介绍了可调卫燃带研究所取得的进展及在130t/h煤粉锅炉上进行半工业性考核试验研究采用的可调卫燃带的结构；详细介绍了可调卫燃带在130t/h煤粉锅炉上的试验结果，并对此进行了讨论分析。

X-50A will take-off vertically and operate as helicopter up to 111km/h, when canard and stabiliser begin to provide lift; transition to conventional wing-borne flight will occur at 241km/h.

的X 50条A将采取小康垂直和经营直升机高达111km / h时，当鸭和稳定剂的开始提供电梯；过渡到常规翼传染的飞行将出现在二百四十一公里/小时。

The H��� robust control problem is resolved with 2-Riccati algorithm, and the H��� robust controller is used in the rotating speed control of wind turbine, which results in completely wind turbine speed control within frequency band of wind speed variation.

用2-Riccati算法对H∞控制器进行求解，将该控制器用于风车的转速控制中，最终实现在风速波动频率范围内的风车完全转速控制。

A comparison of it with the case in wheel/rail typed high speed trains was discussed in detail.The main conclusion obtained is that around 300 km/h wheel/rail trains should be the backbone of the ground high speed rail transit system.

得到的主要结论是：地面高速轨道交通应以 30 0 km/h左右的轮轨高速铁路为主体；在需要 40 0～ 60 0 km/h超高速的特定条件下，也可以采用磁浮高速列车，作为一种补充。

The controller for the inverted pendulum-cart is then designed by using this pole placement method. The design is rather intuitive and simple. The next design for the inverted pendulum is to use two-block and four-block H��� optimal synthesis methods. The results are then analyzed from the viewpoints of fragility and robustness.

论文又采用H〓的两块问题和四块问题分别对倒立摆系统进行系统性的优化设计，并从脆弱性和鲁棒性两个方面对设计结果进行了分析，指出倒立摆H〓优化设计的主要问题还是没有鲁棒性。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷