This review summarizes various ways to make occupational exposure assessment of benzene, the procedure of assessment, the grading of results, the application of exposure assessment.
摘要该文综述了对工业溶剂苯的各种接触评估手段、评估步骤、结果分级及进行接触评估的意义。
The gland shim is a sealing washer of the refrigerator compressor and before the compressor being assembled examination and grading of the gland shims thickness is a key working procedure.
缸盖垫片是冰箱压缩机的一个密封件，对其厚度尺寸的测量和分选是装配前的一道关键工序。
The gland shim is a sealing washer of the refrigerator compressor and before the compressor being assembled examination and grading of the gland shims thickness is a key working procedure.
缸盖垫片是冰箱压缩机的一个密封件，对其厚度尺寸的测量和分选是装配前的一道关键工序。
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