The futures brokerage firms, which assume the main futures transaction risks, are in the important chain of risk control system.
而期货经纪公司作为风险的主要承担者，在风险控制体系中处于重要地位。
2
Control part of the mainchain of the transmitter sends out pulses of frequency, duty cycle and sparse modulation and counting and detection distance control.
控制部分主要对发送器发出的脉冲链频率、占空比及稀疏调制和计数及探测距离等进行控制。
3
Then this dissertation proposes the main module of a supply chain inventory control system simulation model and analyzes the simulation process of the main events in the model.