Tuning SQL queries is not simple; it involves a well-planned and well-designed test strategy, careful observations and in-depth analysis.
SQL查询的调优并不简单；它包含计划和设计都很好的测试策略、细致的观察和深入的分析。
According to the well logging requirement, the embedded system with 80c196, interface circuit, and the circuit of signal adjusting on the well depth and indicator diagram are designed.
根据测井要求，设计了80c196单片机系统及其外围接口电路，并分别为液面反射波信号和功图信号设计了调理电路。
The designed testing system in the paper can complete these tests as to air pressure, airflow rate, rotary speed, bit weight and drilling depth in the process of well drilling.
本文设计的物探钻具性能测试系统可完成对钻井过程中的空气压力、空气流量、转速、钻压、钻井深度等参数的测试。
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