This paper presents systematic calculation about steering loads, taking both the tracks slip and track-width into account. We can deduce propelling force, braking force and steering resistance torque in an algorithmic model on the assumption of uniform pressure distribution and concentrated ground-contact-load distribution in steering process. The result shows that, propelling force, braking force and steering resistance torque can be computed on a simple model of considered tracks' slip and disregarded track-width when track-width is considered. Propelling force and brake force lean to the bodys longitudinal geometrical centerline, while offsets can be ignored relative to track-width.

In order to search after a new way of the propulsion system of tracked vehicle, a novel structure form of electro-mechanical transmission was developed in this paper, through analyzing the advantages and disadvantages of existing projects of electric drive system for tracked vehicle. It could increase the rate of power exertion obviously and synthesize the mechanical and electrical strongpoint. And based on the structure form, an electro-mechanical transmission was designed with double electromotor added planetary mechanism of steering power coupling and gearshift, considering engineering realization. And then straight-line driving and steering performances of the transmission were calculated which proved that the novel electro-mechanical transmission could meet the requirement of tracked vehicle propulsion well.

Current Chinese segmenting method doesn’t consider grammar and semantics during the process of segmenting. So segmenting accuracy and speed are not good. Therefore, on the base of analyzing the peculiarity of Chinese, a knowledge-based Chinese segment method, KSM, is presented. It uses a dictionary of hierarchical structure to get all the re-segmented words and makes ambiguity processing easy and effective. It gets support not only from letters and words knowledge, but from grammar and semantics knowledge. It removes wrong segmentation by checking grammar and semantics. Also It can learn new words to improve the accuracy of segmenting.

Temperature-controlled HNO3-H2O2 wet digestion and flame atomic absorption spectrometry (FAAS) were employed in the determination of mineral elements in the fermented liquid residue of livestock dung. The 8 most common mineral elements-K, Na, Fe, Mn, Cu, Zn, Ca and Mg-in fermented liquid were selected for analysis, and the experimental results showed that the correlation coefficient (r) of each mineral element’s quantitative standard curve was >0.9993, the quantitation limit was 0.90-67.0 ng/L, the relative standard deviation (RSD) was 0.79%-2.51%, and the standard addition recovery rate was 95%-103%. It was found that the average content of the 8 mineral elements in fermented liquid was in a descending order of K, Na, Ca, Mg, Fe, Mn, Zn and Cu.