These cooling sticks are 7.6-meter-long steel tubes drilled into the soil; they contain ammonia, which draws latent heat out of the soil as it evaporates.
这些钻进土壤的冷却钢管有7.6米长，里面装有氨水，能够吸收土壤中的潜在热量。
Introduced the LFNH-DW2001 ammonia nitrogen on-line monitor meter the principle of work, the work flow and the routine maintenance and the common breakdown remove the method.
介绍LFNH - DW 2001型氨氮在线监测仪的工作原理、工作流程及日常维护和常见故障的排除方法。
Introduced the LFNH-DW2001 ammonia nitrogen on-line monitor meter the principle of work, the work flow and the routine maintenance and the common breakdown remove the method.
介绍LFNH - DW 2001型氨氮在线监测仪的工作原理、工作流程及日常维护和常见故障的排除方法。
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