Since 1970s China has successively developed TYZ type and AT type raise borers and achieved remarkable results in raise boring.
我国从七十年代以来，相继研制成功了TY Z型和AT型天井钻机，在天井钻进中取得了显著的效果。
Through the experiment with the circuits thermal drift, of TYZ-3 intelligent soil nutrition gauge, J-type field effect transistor(JFET) was found as the major cause of circuits thermal drift.
本文简要综述了国内外的电路温度补偿方法，对TYZ-3智能型土壤养分测试仪的温度漂移进行了试验研究。
Through the experiment with the circuits thermal drift, of TYZ-3 intelligent soil nutrition gauge, J-type field effect transistor(JFET) was found as the major cause of circuits thermal drift.
本文简要综述了国内外的电路温度补偿方法，对TYZ-3智能型土壤养分测试仪的温度漂移进行了试验研究。
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