This paper gives the calculating formulas for the pre-tension of the wrapping wireswhich considers the effects of the voids in the main cable, and discusses the selection of the timeand the technical requirements for wrapping the main cable with steel wires.

Objective: To investigate the prenatal diagnosis, relative management, and the relationship between the method of delivery, the fetus status and umbilical cord entanglement.

Objective Through investigating the effect of cord entanglement on the perinatal fetus, to determine the appropriate management and the index of operation.

Objective: To investigate the influencing factors of cord entanglement Methods: A self-control questionnaire was administered to pregnant women who are at 28th to 42th week of gestation.

Umbilical cord entanglement is a common obstetric complications,is an important reason for many Perinatal diseases,which constitutes serious threat to newborn health.

Tension power amplifiers of tape winding machine based on CPLD

We developed an NC(numerical control) tape winding machine for composite forming of aerospace components.