我公司生产的可调节式堰门共分三类:铸铁堰门(TY)钢制直动式堰门(TYZ)、钢制旋转堰门(TYX)TY型由铸铁制成,耐腐蚀性好,结构简单价格便宜,在关闭状态有较高密封要求时,可在门框上镶铜密封面,宽度...
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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。
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