This paper presents the limitations of existing theories meant to explain parasitic gaps in relation with weak crossover effect and Across the Board gaps.

Insist on innovating the system and push forward a leap over - development of Baogang;

In late years particular circumstances in Russia, Marx put forward the theory of "Cauldine Forks": Russia could leap over the stage of capitalism.

Only by leap over development strategy can the lag behind countries follow up and overtake the first developed countries.

Correlative Solution Way and Calculation for Line Span;

“Span Issue” in Evolution of Agricultural Technique;

This paper introduces using DiNiMa catenary to span 220 kV,110 kV electric power line construction without power cut and gains success in the project of Sanxia Xiaogan-Hanyan Ⅱ circuit 500 kV transmission line.

In recent years,during transmission line construction,nonpowercut spanning methods were widely used while spanning high voltage power lines.

Using the finite element theory, this paper is concerned with, the dynamic characteristics of a cable-stayed pipe bridge of Zhongqing gas pipeline spanning Fujiang caused by the liquid column accumulation while pigging.

The"spanning"is not only that of the social system but also of the productive force.

On Crossing History Moment and the Development of Socialism;

This article introduces the mode of using net crossing rope way and the construction of charged crossing 500 kV double lines.

Aimed crossing construction on live EHV transmission lines,aluminium alloy crossing-line shelf is set upand insulating rope covers its top.

On sustainable development of productivity and leap in productivity development;

In order to leap TBT,enterprises in Fujian should insist on strategy of portfolios,enterprises "walk out" and focus on quality, enhance self-innovation capabilities of enterprises,build warning and immediately reacting system of TBT,play the roles of trade association,strengthen international accreditation to export products.